National Forum Foundation. (1959). Teacher's guide for being teen-agers. National Forum.
Citazione stile Chigago Style (17a edizione)National Forum Foundation. Teacher's Guide for Being Teen-agers. Chicago: National Forum, 1959.
Citatione MLA (9a ed.)National Forum Foundation. Teacher's Guide for Being Teen-agers. National Forum, 1959.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.