Hanna, P. R. (1966). Geography in the teaching of social studies: Concepts and skills. Houghton Mifflin.
Citace podle Chicago (17th ed.)Hanna, Paul R. Geography in the Teaching of Social Studies: Concepts and Skills. Boston: Houghton Mifflin, 1966.
Citace podle MLA (8th ed.)Hanna, Paul R. Geography in the Teaching of Social Studies: Concepts and Skills. Houghton Mifflin, 1966.
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