Gaya APA

Bulla, C, R., Allen, T, B. (1987). A Stepping Stone Book: The Chalk Box Kid (Cet. 1.--). New York: Random House.

Gaya MLA

Bulla, Clyde, Robert., Allen, Thomas, B.. "A Stepping Stone Book: The Chalk Box Kid". Cet. 1.-- New York: Random House, 1987. Text.