APA (7th ed.) Citation

Ritchie, A. C., & Boyd, W. (1990). Boyd's textbook of pathology (9th ed.). Lea & Febiger.

Chicago Style (17th ed.) Citation

Ritchie, A. C., and William Boyd. Boyd's Textbook of Pathology. 9th ed. Philadelphia: Lea & Febiger, 1990.

MLA (9th ed.) Citation

Ritchie, A. C., and William Boyd. Boyd's Textbook of Pathology. 9th ed. Lea & Febiger, 1990.

Warning: These citations may not always be 100% accurate.