Cita APA (7a ed.)

Cohen, L. E., & Waite-Stupiansky, S. (2012). Play: A polyphony of research, theories, and issues. University Press of America.

Cita Chicago Style (17a ed.)

Cohen, Lynn E., y Sandra Waite-Stupiansky. Play: A Polyphony of Research, Theories, and Issues. Lanham: University Press of America, 2012.

Cita MLA (8a ed.)

Cohen, Lynn E., y Sandra Waite-Stupiansky. Play: A Polyphony of Research, Theories, and Issues. University Press of America, 2012.