AskUs@CSS: APA, 6th edition

[I am going to assume that you wish to cite this in APA style].

This, from pp.  219-220 of the Publication Manual of the American Psychological Association, 6th edition.

A7.04  Statutes (Bluebook Rule 12)
In text, give the popular or official name of the act (if any) and the year of the act. In the reference list entry, include the source and section number of the statute, and in parentheses, give the publication date of the statutory compilation, which may be different from the year in the name of the act.

10.  Sample reference to a statute in state code

Mental Care and Treatment Act, 4 Kan. Stat. Ann. §§ 59-2901-2941 (1983 & Supp. 1992).

Explanation: This Kansas act can be found in codified version between sections 2901 and 2941 in Chapter 59 of volume 4 of the 1983 edition of Kansas Statues Annotated. Two amendments to the act and additional references are provided in the 1992 supplement for the Kansas Statutes Annotated. If you are discussing a particular provision of the law, cite the particular section in which the the provision appeared (e.g. § 59-2309). Ann. stand for Annotated, which refers to the version of the Kansas statutory compilation containing summarized cases interpreting particular sections of the statute.

I checked the APA Style Guide to Electronic Resources, 6th edition, so see if any other explanation was offered and it was not.

Based on the information in your question, the in-text should look like this

Clinical Psychologist Licensing Act (2012).

[It looks like it was last amended in 2012 based on this - ftp://www.ilga.gov/JCAR/AdminCode/068/06801400sections.html].

For your reference list, it would look something like ...

Clinical Psychologist Licensing Act, ILCS. §§ 225-15/1 (n.d.) 

But this is a mess, since it appears what APA asks for and what Illinois supplies is different. But if we go with "spirit of the law," then we know the name of the act, that it appears in the Illinois Compiled Statutes, and the chapter number and section number.

I could not find any date for the online ILCS, which is whay I opted for (n.d.) for the date.

I am slightly tempted to through this on the end of the citation , but is is cumbersome.

Retrieved from http://ilga.gov/legislation/ilcs/ilcs3.asp?ActID=1294&ChapAct=225%26nbsp%3BILCS%26nbsp%3B15%2F&ChapterID=24&ChapterName=PROFESSIONS+AND+OCCUPATIONS&ActName=Clinical+Psychologist+Licensing+Act%2E

I am not sure if this is correct for the citation, but I don't know who would be a final authority and if it is really worth the trouble. I am going to assume your professor would not know (and if he or she does, let us gladly let them show us the way!), and this is not a legal document (for which I would recommend a lawyer) but a school paper. 

So ... a citation should allow your reader to know exactly what it is you are quoting, and allow them to find the source. I think we have met that threshold.

ILCS Numbering ...

For example, Section 17-3 of the School Code is cited as 105 ILCS 5/17-3. The chapter number is 105 (Schools), the Act prefix number is 5 (the School Code), the slash separates the Act prefix from what follows, and 17-3 corresponds exactly to the Section number of the Act. Act prefix numbers within a chapter are in intervals of 5 and gaps are left in certain places to allow for expansion. New Acts may be added to the numbering scheme using whole number Act prefixes.