From Statute to Session Law to Bill Number: Steps
Finding the Bill Number location in different online sources
Fla. Stat. §817.535 has the following note at the text's end: History s. 1, ch. 2013-228.
Look for the "SB", "S", "HB", or "H" reference in the following sources:
History notes at the end of the statute text in Westlaw hyperlink directly to the Chapter Laws. Clicking on the single link for §817.535 brings up the related Chapter Law below. (For purposes of this exercise do not click on the 'History' tab at the top in statute view.)
The 'S.B.' in the header indicates that the bill involved was a Senate bill, specifically Committee Substitute for Committee Substitute for Committee Substitute for Senate Bill 112. Tabs in the Chapter Law view indicate that 16 legislative history documents and 7 prior bill draft versions are available. 
History notes at the end of the statute text in Lexis Advance hyperlink directly to the Chapter Laws. Clicking on the single link for §817.535 brings up the related Chapter Law below.
The 'SB' in the header indicates that the bill involved was a Senate bill. Specifically, it is noted as a committee substitute for Senate Bill 112. 
From the Session laws Library you can browse the year 2013, or if you have the Chapter and Law Number use the Chapter Search feature for "Florida", Yr: "YYYY" and ch: "YYYY-###".
Additional details
| Over time, one statute may have been amended by many session laws. All the session laws that amended a statute will be cited in the history notes section of whichever version of the Statutes you consult, and consists of two numbers—the first number indicates the year the act was passed; the second indicates the order when the act was submitted to the Secretary of State for printing in that year, with | each act being assigned a consecutive law number. The terms 'Law', 'Session Law', 'Chapter Law', and 'Chapter [year - number] Laws of Florida' are all used interchangeably. The term 'Public Law' is commonly used for federal legislation, but is also used in Florida to refer to a law of statewide general application. |
Session laws also include section numbers—those do not coincide with the section numbers of the statute.
A Chapter Law/Session Law or an "Act"A bill that has passed both houses of the legislature is an Act. An act becomes a Law when the Governor either approves it or fails to sign or veto it within the period specified in the State Constitution., may contain text from several bills. This is especially common with appropriation bills. These other bills are not listed on the main enacting bill number notations, but can be found by looking at the companion or "related" bills. |
Bill Numbers from Conversion Tables
In Print
In print you can find the Bill Number by looking for the session law in the corresponding yearly volume of Laws of Florida, KFF25 .A213 (2nd Floor).
Online
From 1997 to the current year the online Laws of Florida will list the Session Laws by number, together with the corresponding main bill.
Bill Number to Chapter Law
Without Westlaw, Lexis or HeinOnline access, but with the session law number, you can probably work your way back to the Bill Number for recent years in another way. To do this you use a General Laws Conversion Table that correlates from Bill Number to Session Law Chapter Number.
The table for the most recent available year can be found here.
For the years 2003 to 2010 the Digest of General Laws will list the same information under the 'Conversion Table' link.
Statute Number to Bill Number
The Online Sunshine Bill Information Citator provides a yearly chart listing a conversion from statute number to Bill Numbers for enacted Chapter Laws. Coverage is from 1998 to the present, using the 'Statute/Constitution Citations' link.
To use these charts one has to know the year the statute was amended.