Fletcher, R. H., & Fletcher, S. W. (2005). Clinical epidemiology: The essentials (4th ed.). Lippincott Williams & Wilkins.
芝加哥风格引文Fletcher, Robert H., 与 Suzanne W. Fletcher. Clinical Epidemiology: The Essentials. 4th ed. Philadelphia: Lippincott Williams & Wilkins, 2005.
MLA引文Fletcher, Robert H., 与 Suzanne W. Fletcher. Clinical Epidemiology: The Essentials. 4th ed. Lippincott Williams & Wilkins, 2005.
警告：这些引文格式不一定是100％准确.