Sheldon, H., & Sheldon, H. (1984). Boyd's introduction to the study of disease (9. edition.). Philadelphia, Pennsylvania, E.E.U.U.: Lea & Febiger.
Chicago Style CitationSheldon, Huntington, and Huntington Sheldon. Boyd's Introduction to the Study of Disease. 9. edition. Philadelphia, Pennsylvania, E.E.U.U.: Lea & Febiger, 1984.
MLA CitationSheldon, Huntington, and Huntington Sheldon. Boyd's Introduction to the Study of Disease. 9. edition. Philadelphia, Pennsylvania, E.E.U.U.: Lea & Febiger, 1984.
Warning: These citations may not always be 100% accurate.