APA (7th ed.) Citation

Heather, N., & Robertson, I. (1985). Problem drinking / Nick Heather and Ian Robertson. Penguin.

Chicago Style (17th ed.) Citation

Heather, Nick, and Ian Robertson. Problem Drinking / Nick Heather and Ian Robertson. Harmondsworth: Penguin, 1985.

MLA (9th ed.) Citation

Heather, Nick, and Ian Robertson. Problem Drinking / Nick Heather and Ian Robertson. Penguin, 1985.

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