APA

United States, . (1991). Trends in home oxygen use: management advisory report. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General.

Chicago

United States, . 1991. Trends in home oxygen use: management advisory report. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General.

Harvard

United States, . (1991). Trends in home oxygen use: management advisory report. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General.

MLA

United States, . Trends in home oxygen use: management advisory report. [Washington, D.C.]: Department of Health and Human Services, Office of Inspector General. 1991.