APA

National Institute of Mental Health (U.S.), . (1973). Directory of general hospitals providing walk-in emergency mental health services. [Washington, D.C: .

Chicago

National Institute of Mental Health (U.S.), . 1973. Directory of general hospitals providing walk-in emergency mental health services. [Washington, D.C: .

Harvard

National Institute of Mental Health (U.S.), . (1973). Directory of general hospitals providing walk-in emergency mental health services. [Washington, D.C: .

MLA

National Institute of Mental Health (U.S.), . Directory of general hospitals providing walk-in emergency mental health services. [Washington, D.C: . 1973.