Gartrell, D., & Gartrell, D. ß. G. a. t. d. (1997). A guidance approach for the encouraging classroom (2nd ed.). Delmar Publishers.
Citace podle Chicago (17th ed.)Gartrell, Daniel, a Daniel. ßt Guidance approach to discipline Gartrell. A Guidance Approach for the Encouraging Classroom. 2nd ed. Albany, N.Y: Delmar Publishers, 1997.
Citace podle MLA (9th ed.)Gartrell, Daniel, a Daniel. ßt Guidance approach to discipline Gartrell. A Guidance Approach for the Encouraging Classroom. 2nd ed. Delmar Publishers, 1997.
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