Cita APA (7th ed.)

Willard, H. S., Spackman, C. S., Hopkins, H. L., & Smith, H. D. (1978). Willard and Spackman's Occupational therapy. Lippincott.

Cita Chicago (17th ed.)

Willard, Helen S., Clare S. Spackman, Helen L. Hopkins, i Helen D. Smith. Willard and Spackman's Occupational Therapy. Philadelphia: Lippincott, 1978.

Cita MLA (9th ed.)

Willard, Helen S., et al. Willard and Spackman's Occupational Therapy. Lippincott, 1978.