Piaget, J., & Campbell, S. F. (1976). Piaget sampler: An introduction to Jean Piaget through his own words. Wiley.
Chicago Style (17th ed.) CitationPiaget, Jean, and Sarah F. Campbell. Piaget Sampler: An Introduction to Jean Piaget Through His Own Words. New York [u.a.]: Wiley, 1976.
MLA (8th ed.) CitationPiaget, Jean, and Sarah F. Campbell. Piaget Sampler: An Introduction to Jean Piaget Through His Own Words. Wiley, 1976.
Warning: These citations may not always be 100% accurate.