APA (7th ed.) Citation

United States. General Services Administration. (1991). Contracting opportunities with GSA. U.S. General Services Administration.

Chicago Style (17th ed.) Citation

United States. General Services Administration. Contracting Opportunities with GSA. [Washington, D.C.?]: U.S. General Services Administration, 1991.

MLA (9th ed.) Citation

United States. General Services Administration. Contracting Opportunities with GSA. U.S. General Services Administration, 1991.

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