(1953). Locally produced resource materials and improved textbooks. Education Quarterly.
Chicago-referens (17:e uppl.)"Locally Produced Resource Materials and Improved Textbooks." Education Quarterly 1953.
MLA-referens (9:e uppl.)"Locally Produced Resource Materials and Improved Textbooks." Education Quarterly, 1953.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.