APA (7th ed.) Zitazioa
Sund, R. B. (1976). Piaget for educators: A multimedia program. Charles E.Merrill Pub..
Chicago Style (17th ed.) Zitazioa
Sund, Robert B. Piaget for Educators: A Multimedia Program. Ohio: Charles E.Merrill Pub., 1976.
MLA (9th ed.) Zitazioa
Sund, Robert B. Piaget for Educators: A Multimedia Program. Charles E.Merrill Pub., 1976.
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