APA

National Institute of Mental Health (U.S.), . (1972). Learning about depressive illnesses. [Washington, D.C: .

Chicago

National Institute of Mental Health (U.S.), . 1972. Learning about depressive illnesses. [Washington, D.C: .

Harvard

National Institute of Mental Health (U.S.), . (1972). Learning about depressive illnesses. [Washington, D.C: .

MLA

National Institute of Mental Health (U.S.), . Learning about depressive illnesses. [Washington, D.C: . 1972.