Citace podle APA (7th ed.)
Baur, G. R., & Olsen George, L. (1976). Helping children learn mathematics: A competency-based laboratory approach.
Citace podle Chicago (17th ed.)
Baur, Gregory R., a Linda Olsen George. Helping Children Learn Mathematics: A Competency-based Laboratory Approach. 1976.
Citace podle MLA (9th ed.)
Baur, Gregory R., a Linda Olsen George. Helping Children Learn Mathematics: A Competency-based Laboratory Approach. 1976.
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