APA (7th ed.) Citation

Williams, P. L., Wendell Smith, C. P., & Treadgold, S. (1966). Basic human embryology. Lippincott.

Chicago Style (17th ed.) Citation

Williams, Peter L., Colin Peter Wendell Smith, and Sylvia Treadgold. Basic Human Embryology. Philadelphia: Lippincott, 1966.

MLA (9th ed.) Citation

Williams, Peter L., et al. Basic Human Embryology. Lippincott, 1966.