APA

United States, . (1991). Medicare secondary payer: effectiveness of current procedures. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General.

Chicago

United States, . 1991. Medicare secondary payer: effectiveness of current procedures. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General.

Harvard

United States, . (1991). Medicare secondary payer: effectiveness of current procedures. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General.

MLA

United States, . Medicare secondary payer: effectiveness of current procedures. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General. 1991.