Willard, H. S., & Spackman, C. S. (1954). Principles of occupational therapy (2nd ed.). J. B. Lippincott.
Cita Chicago Style (17a ed.)Willard, Helen S., y Clare S. Spackman. Principles of Occupational Therapy. 2nd ed. Philadelphia: J. B. Lippincott, 1954.
Cita MLA (8a ed.)Willard, Helen S., y Clare S. Spackman. Principles of Occupational Therapy. 2nd ed. J. B. Lippincott, 1954.
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