APA (7th ed.) Citation

Thomas, A., Kelley, E., & Galvin, T. (1981). Horseback riding is for me. Lerner.

Chicago Style (17th ed.) Citation

Thomas, Art, Emily Kelley, and Tom Galvin. Horseback Riding Is for Me. Minneapolis: Lerner, 1981.

MLA (9th ed.) Citation

Thomas, Art, et al. Horseback Riding Is for Me. Lerner, 1981.