OPM, the year in review
MLA
Opm, the Year In Review. [Washington, D.C.]: U.S. Office of Personnel Management, Office of Public Affairs, 1979-
APA, 7th edition
(1979-). OPM, the year in review. [Washington, D.C.]: U.S. Office of Personnel Management, Office of Public Affairs
Chicago, 17th edition
OPM, the year in review. [Washington, D.C.]: U.S. Office of Personnel Management, Office of Public Affairs, 1979-