Não informado. (1968). Focus on guidance. American Personnel and Guidance Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Focus on Guidance. Denver, Colo: American Personnel and Guidance Association, 1968.
MLA-Zitierstil (8. Ausg.)Não informado. Focus on Guidance. American Personnel and Guidance Association, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.