APA (7th ed.) Citation

Johanson, Snyder, & Lader. (1988). Cocaine - a new epidemic. Burke.

Chicago Style (17th ed.) Citation

Johanson, Snyder, and Lader. Cocaine - a New Epidemic. London: Burke, 1988.

MLA (8th ed.) Citation

Johanson, et al. Cocaine - a New Epidemic. Burke, 1988.