APA

National Institutes of Health (U.S.), . (1971). Nurse supply and needs: current nursing statistics in brief. [Washington, D.C: .

Chicago

National Institutes of Health (U.S.), . 1971. Nurse supply and needs: current nursing statistics in brief. [Washington, D.C: .

Harvard

National Institutes of Health (U.S.), . (1971). Nurse supply and needs: current nursing statistics in brief. [Washington, D.C: .

MLA

National Institutes of Health (U.S.), . Nurse supply and needs: current nursing statistics in brief. [Washington, D.C: . 1971.