APA (7e ed.) Bronvermelding

Não informado. (1950). GP. American Academy of General Practice.

Chicago (17e ed.) Bronvermelding

Não informado. GP. Kansas City, Kan: American Academy of General Practice, 1950.

MLA (8e ed.) Bronvermelding

Não informado. GP. American Academy of General Practice, 1950.

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