APA (7th ed.) Citation

Steig, W., & Euvremer, T. (1997). Toby, where are you? HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Steig, William, and Teryl Euvremer. Toby, Where Are You? [New York]: HarperCollins Publishers, 1997.

MLA (8th ed.) Citation

Steig, William, and Teryl Euvremer. Toby, Where Are You? HarperCollins Publishers, 1997.