Wangen, R. (1977). Some Essential Learner Outcomes in Social Studies. Curriculum Bulletin No. 43.
Citazione stile Chigago Style (17a edizione)Wangen, Roger. Some Essential Learner Outcomes in Social Studies. Curriculum Bulletin No. 43. 1977.
Citatione MLA (9a ed.)Wangen, Roger. Some Essential Learner Outcomes in Social Studies. Curriculum Bulletin No. 43. 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.