Most style manuals have a section on citing government documents, including example ctiations.
Whether you are citing a printed document or an electronic document, the record in the library's online catalog can help you to identify the different elements required.
Some helpful tips:
Treat a government document as a book, report, or brochure.
If a person is named on the title page, use her or him as author.
If no person is named, use the government agency, department, or branch as a group author (APA Manual, 6th ed.,ex. 31, p.205).
Give the name of the group author exactly as it appears on the title page. If the branch or agency is not well known, include its higher department first.
If the group author is also the publisher, just use the word Author after the location (APA Manual, p. 203).
If there is a series or report number, include it after the title in parentheses (APA Manual, p. 205).
The Publication Manual of the APA (or APA Manual) refers to the GPO (U.S. Gov. Printing Office). Canadian equivalents may be: Queen’s Printer, Ministry of Supply and Services, Canadian Government Publishing, etc.
Online Resources for Government Documents Citation.