APA引文

Beard, R. M. (1969). An outline of Piaget's developmental psychology, for students and teachers. Routledge and Kegan Paul.

Chicago Style (17th ed.) Citation

Beard, Ruth M. An Outline of Piaget's Developmental Psychology, for Students and Teachers. London: Routledge and Kegan Paul, 1969.

MLA引文

Beard, Ruth M. An Outline of Piaget's Developmental Psychology, for Students and Teachers. Routledge and Kegan Paul, 1969.