APA (7th ed.) Citation

Boyd, W., & Sheldon, H. (1984). Boyd's Introduction to the study of disease (Ninth edition.). Lea & Febiger.

Chicago Style (17th ed.) Citation

Boyd, William, and Huntington Sheldon. Boyd's Introduction to the Study of Disease. Ninth edition. Philadelphia: Lea & Febiger, 1984.

MLA (9th ed.) Citation

Boyd, William, and Huntington Sheldon. Boyd's Introduction to the Study of Disease. Ninth edition. Lea & Febiger, 1984.