APA (7e ed.) Bronvermelding

Não informado. (1968). Focus on guidance. American Personnel and Guidance Association.

Chicago (17e ed.) Bronvermelding

Não informado. Focus on Guidance. Denver, Colo: American Personnel and Guidance Association, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Focus on Guidance. American Personnel and Guidance Association, 1968.

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