Cita APA (7a ed.)

Turnbull, A. P., & Turnbull, H. R. (1990). Families, professionals, and exceptionality: A special partnership (2nd ed.). Merrill [etc.].

Cita Chicago Style (17a ed.)

Turnbull, Ann P., y H. Rutherford Turnbull. Families, Professionals, and Exceptionality: A Special Partnership. 2nd ed. New York [etc.]: Merrill [etc.], 1990.

Cita MLA (9a ed.)

Turnbull, Ann P., y H. Rutherford Turnbull. Families, Professionals, and Exceptionality: A Special Partnership. 2nd ed. Merrill [etc.], 1990.