Boyd's textbook of pathology.
APA Citation
Ritchie, A. C., Boyd, W. (1990). Boyd's textbook of pathology. 9th ed. / Philadelphia: Lea & Febiger.
MLA Citation
Ritchie, A. C, and William Boyd. Boyd's Textbook of Pathology. 9th ed. / Philadelphia: Lea & Febiger, 1990.
Warning: These citations may not always be complete (especially for serials).