APA (7th ed.) Zitazioa

Beth, E. W., & Piaget, J. (1966). Mathematical epistemology and psychology. D. Reidel.

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

Beth, Evert W., eta Jean Piaget. Mathematical Epistemology and Psychology. D. Reidel, 1966.