National Forum Foundation. (1953). Teacher's guide for our school life. National Forum.
Citazione stile Chigago Style (17a edizione)National Forum Foundation. Teacher's Guide for Our School Life. Chicago: National Forum, 1953.
Citatione MLA (9a ed.)National Forum Foundation. Teacher's Guide for Our School Life. National Forum, 1953.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.