Dyfyniad APA

Brown, G., & Desforges, C. (1979). Piaget's theory: Psychological critique. Routledge & Kegan Paul.

Dyfyniad Arddull Chicago

Brown, Geoffrey, and Charles Desforges. Piaget's Theory: Psychological Critique. London: Routledge & Kegan Paul, 1979.

Dyfyniad MLA

Brown, Geoffrey, and Charles Desforges. Piaget's Theory: Psychological Critique. Routledge & Kegan Paul, 1979.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.