Cita APA (7a ed.)

Olson, D. H. L., Russell, C. S., & Sprenkle, D. H. (1989). Circumplex model: Systemic assessment and treatment of families. Haworth.

Cita Chicago Style (17a ed.)

Olson, David H. L., Candyce S. Russell, y Douglas H. Sprenkle. Circumplex Model: Systemic Assessment and Treatment of Families. New York [etc.]: Haworth, 1989.

Cita MLA (9a ed.)

Olson, David H. L., et al. Circumplex Model: Systemic Assessment and Treatment of Families. Haworth, 1989.