Παραπομπή APA

Beth, E., Piaget, J., & Mays, W. (1966). Mathematical epistemology and psychology. Dordrecht: D.Reidel Publishing Company.

Παραπομπή Chicago Style

Beth, Evert, Jean Piaget, and W. Mays. Mathematical Epistemology and Psychology. Dordrecht: D.Reidel Publishing Company, 1966.

Παραπομπή MLA

Beth, Evert, Jean Piaget, and W. Mays. Mathematical Epistemology and Psychology. Dordrecht: D.Reidel Publishing Company, 1966.

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