Cita APA (7th ed.)

Frost, J. L. (1992). Play and playscapes. Delmar.

Cita Chicago (17th ed.)

Frost, Joe L. Play and Playscapes. New York: Delmar, 1992.

Cita MLA (9th ed.)

Frost, Joe L. Play and Playscapes. Delmar, 1992.