Cita APA (7a ed.)

Barell, J. (1980). Playgrounds of our minds. Teachers College Press.

Cita Chicago Style (17a ed.)

Barell, John. Playgrounds of Our Minds. New York: Teachers College Press, 1980.

Cita MLA (9a ed.)

Barell, John. Playgrounds of Our Minds. Teachers College Press, 1980.