APA (7th ed.) Citation

McCallion, G. (1994). Union membership by state. Congressional Research Service, Library of Congress.

Chicago Style (17th ed.) Citation

McCallion, Gail. Union Membership by State. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1994.

MLA (9th ed.) Citation

McCallion, Gail. Union Membership by State. Congressional Research Service, Library of Congress, 1994.

Warning: These citations may not always be 100% accurate.