Cita APA (7a ed.)

Willard, H. S., Spackman, C. S., Hopkins, H. L., & Smith, H. D. (1993). Occupational therapy: Willard and Spackman's (8th ed.). Lippincott.

Cita Chicago Style (17a ed.)

Willard, Helen S., Clare S. Spackman, Helen L. Hopkins, y Helen D. Smith. Occupational Therapy: Willard and Spackman's. 8th ed. Philadelphia: Lippincott, 1993.

Cita MLA (9a ed.)

Willard, Helen S., et al. Occupational Therapy: Willard and Spackman's. 8th ed. Lippincott, 1993.