Citazione Stile APA (7a Edizione)

O'Connor, K. J. (1991). The play therapy primer: An integration of theories and techniques. Wiley.

Citazione stile Chigago Style (17a edizione)

O'Connor, Kevin J. The Play Therapy Primer: An Integration of Theories and Techniques. New York: Wiley, 1991.

Citatione MLA (8a ed.)

O'Connor, Kevin J. The Play Therapy Primer: An Integration of Theories and Techniques. Wiley, 1991.