APA (7th ed.) Citation

Heather, N., & Robertson, I. (1989). Problem drinking (2nd ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Heather, Nick, and Ian Robertson. Problem Drinking. 2nd ed. Oxford ; New York: Oxford University Press, 1989.

MLA (9th ed.) Citation

Heather, Nick, and Ian Robertson. Problem Drinking. 2nd ed. Oxford University Press, 1989.