APA (7th ed.) Citation

Williams, P. L. a., Wendell Smith, C. P., & Treadgold, S. (1969). Basic human embryology (Second Edition.). Pitman Medical & Scientific.

Chicago Style (17th ed.) Citation

Williams, Peter L. autor, C. P. Wendell Smith, and Sylvia Treadgold. Basic Human Embryology. Second Edition. London: Pitman Medical & Scientific, 1969.

MLA (9th ed.) Citation

Williams, Peter L. autor, et al. Basic Human Embryology. Second Edition. Pitman Medical & Scientific, 1969.