MLA

Leong, and Stanley P. L Leong. Cancer Clinical Trials: Proactive Strategies. Springer US, 2007.

APA

Leong, L., & Leong, S. P. L. (2007). Cancer Clinical Trials: Proactive Strategies. Springer US.

Chicago

Leong, and Stanley P. L Leong. Cancer Clinical Trials: Proactive Strategies. : Springer US, 2007.