Kilpatrick, W. H. (1926). The project method: The use of the purposeful act in the educative process. Teachers college, Columbia university.
Citace podle Chicago (17th ed.)Kilpatrick, William Heard. The Project Method: The Use of the Purposeful Act in the Educative Process. New York city: Teachers college, Columbia university, 1926.
Citace podle MLA (8th ed.)Kilpatrick, William Heard. The Project Method: The Use of the Purposeful Act in the Educative Process. Teachers college, Columbia university, 1926.
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