APA (7e ed.) Bronvermelding

Não informado. (1940). Mental health. National Association for Mental Health.

Chicago (17e ed.) Bronvermelding

Não informado. Mental Health. London: National Association for Mental Health, 1940.

MLA (8e ed.) Bronvermelding

Não informado. Mental Health. National Association for Mental Health, 1940.

Let op: Deze citaties zijn niet altijd 100% accuraat.