APA (7th ed.) Citation

Harkness, R. (1999). Everything you need to know about reducing cancer risk. Prima health.

Chicago Style (17th ed.) Citation

Harkness, Richard. Everything You Need to Know About Reducing Cancer Risk. [Rocklin, CA]: Prima health, 1999.

MLA (9th ed.) Citation

Harkness, Richard. Everything You Need to Know About Reducing Cancer Risk. Prima health, 1999.

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