APA (7th ed.) Citation

Siegel, M., & Koplin, H. M. (1984). More than a friend: Dogs with a purpose. Walker.

Chicago Style (17th ed.) Citation

Siegel, Mary-Ellen, and Hermine M. Koplin. More than a Friend: Dogs with a Purpose. New York, N.Y: Walker, 1984.

MLA (9th ed.) Citation

Siegel, Mary-Ellen, and Hermine M. Koplin. More than a Friend: Dogs with a Purpose. Walker, 1984.