Hanna, L. A. (1963). Unit teaching in the elementary school: Social studies and related sciences (Rev. ed.). Holt, Rinehart and Winston.
Citace podle Chicago (17th ed.)Hanna, Lavone A. Unit Teaching in the Elementary School: Social Studies and Related Sciences. Rev. ed. New York: Holt, Rinehart and Winston, 1963.
Citace podle MLA (8th ed.)Hanna, Lavone A. Unit Teaching in the Elementary School: Social Studies and Related Sciences. Rev. ed. Holt, Rinehart and Winston, 1963.
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