APA (7th ed.) Citation

Prestage, G., Brown, G., Down, I., Jin, F., & Hurley, M. (2013). It's hard to know what is a risky or not a risky decision: Gay men's beliefs about risk during sex.

Chicago Style (17th ed.) Citation

Prestage, G., Graham Brown, I. Down, F. Jin, and M. Hurley. It's Hard to Know What Is a Risky or Not a Risky Decision: Gay Men's Beliefs About Risk During Sex. 2013.

MLA (9th ed.) Citation

Prestage, G., et al. It's Hard to Know What Is a Risky or Not a Risky Decision: Gay Men's Beliefs About Risk During Sex. 2013.