APA

Piaget J., . (1976). Piaget sampler: an introduction to Jean Piaget through his own words. New York: Wiley.

Chicago

Piaget Jean, . 1976. Piaget sampler: an introduction to Jean Piaget through his own words. New York: Wiley.

Harvard

Piaget J., . (1976). Piaget sampler: an introduction to Jean Piaget through his own words. New York: Wiley.

MLA

Piaget Jean, . Piaget sampler: an introduction to Jean Piaget through his own words. New York: Wiley. 1976.