Erikson Institute, Loyola University, Chicago. Department of Psychology, Loyola University, Chicago. School of Education, Piaget, J., & Piers, M. W. (1972). Play and development: A symposium. Norton.
Style de citation Chicago (17e éd.)Erikson Institute, Chicago. Department of Psychology Loyola University, Chicago. School of Education Loyola University, Jean Piaget, et Maria W. Piers. Play and Development: A Symposium. New York: Norton, 1972.
Style de citation MLA (9e éd.)Erikson Institute, et al. Play and Development: A Symposium. Norton, 1972.
Attention : ces citations peuvent ne pas être correctes à 100%.