APA (7th ed.) Citation

Twycross, R. G., & Lack, S. A. (1989). Oral morphine in advanced cancer (2nd ed.). Beaconsfield Publishers.

Chicago Style (17th ed.) Citation

Twycross, Robert G., and Sylvia A. Lack. Oral Morphine in Advanced Cancer. 2nd ed. Beaconsfield (England): Beaconsfield Publishers, 1989.

MLA (9th ed.) Citation

Twycross, Robert G., and Sylvia A. Lack. Oral Morphine in Advanced Cancer. 2nd ed. Beaconsfield Publishers, 1989.