APA (7th ed.) Citation

Caplan, F., & Caplan, T. (1974). The power of play. Anchor Books.

Chicago Style (17th ed.) Citation

Caplan, Frank, and Theresa Caplan. The Power of Play. Garden City, N.Y: Anchor Books, 1974.

MLA (9th ed.) Citation

Caplan, Frank, and Theresa Caplan. The Power of Play. Anchor Books, 1974.