Dunfee, M., & Sagl, H. L. (1966). Social studies through problem solving: A challenge to elementary school teachers. Holt, Rinehart and Winston.
Citace podle Chicago (17th ed.)Dunfee, Maxine, a Helen L. Sagl. Social Studies Through Problem Solving: A Challenge to Elementary School Teachers. New York: Holt, Rinehart and Winston, 1966.
Citace podle MLA (9th ed.)Dunfee, Maxine, a Helen L. Sagl. Social Studies Through Problem Solving: A Challenge to Elementary School Teachers. Holt, Rinehart and Winston, 1966.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..