Cita APA (7th ed.)

Gordon, E. S., & Sevringhaus, E. L. (1947). Nutritional and vitamin therapy in general practice. Year Book Pub.

Cita Chicago (17th ed.)

Gordon, Edgar Stillwell, i Elmer Louis Sevringhaus. Nutritional and Vitamin Therapy in General Practice. Chicago: Year Book Pub, 1947.

Cita MLA (9th ed.)

Gordon, Edgar Stillwell, i Elmer Louis Sevringhaus. Nutritional and Vitamin Therapy in General Practice. Year Book Pub, 1947.