Cita APA (7th ed.)
Piaget, J. (1980). Experiments in Contradiction. University of Chicago.
Cita Chicago (17th ed.)
Piaget, Jean. Experiments in Contradiction. Chicago, EUA: University of Chicago, 1980.
Cita MLA (9th ed.)
Piaget, Jean. Experiments in Contradiction. University of Chicago, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.