Michaelis, J. U. (1972). Social studies for children in a democracy: Recent trends and developments (5th ed.). Prentice-Hall.
Citace podle Chicago (17th ed.)Michaelis, John Udell. Social Studies for Children in a Democracy: Recent Trends and Developments. 5th ed. Englewood Cliffs, N. J: Prentice-Hall, 1972.
Citace podle MLA (9th ed.)Michaelis, John Udell. Social Studies for Children in a Democracy: Recent Trends and Developments. 5th ed. Prentice-Hall, 1972.
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