APA (7th ed.) Citation

Helfet, A. J. (1974). Disorders of the knee. Lippincott.

Chicago Style (17th ed.) Citation

Helfet, Arthur J. Disorders of the Knee. Philadelphia: Lippincott, 1974.

MLA (9th ed.) Citation

Helfet, Arthur J. Disorders of the Knee. Lippincott, 1974.