APA (7e ed.) Bronvermelding

Não informado. (1968). Imprint. National Student Nurses Association.

Chicago (17e ed.) Bronvermelding

Não informado. Imprint. New York: National Student Nurses Association, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Imprint. National Student Nurses Association, 1968.

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