APA-viite (7. p.)

Frost, J. L., & Klein, B. L. (1979). Children's play and playgrounds. Allyn and Bacon.

Chicago-viite (17. p.)

Frost, Joe L., ja Barry L. Klein. Children's Play and Playgrounds. Boston: Allyn and Bacon, 1979.

MLA-viite (9. p.)

Frost, Joe L., ja Barry L. Klein. Children's Play and Playgrounds. Allyn and Bacon, 1979.