Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Turnbull, Ann P., i H. Rutherford Turnbull. Families, Professionals, and Exceptionality: A Special Partnership. 2nd ed. Columbus, Ohio: Merrill, 1990.

Cita MLA (9th ed.)

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