Cita APA (7a ed.)

York, P., York, D., & Wachtel, T. (1982). Toughlove. Doubleday.

Cita Chicago Style (17a ed.)

York, Phyllis, David York, y Ted Wachtel. Toughlove. Garden City, NY: Doubleday, 1982.

Cita MLA (9a ed.)

York, Phyllis, et al. Toughlove. Doubleday, 1982.