APA (7th ed.) Citation

Christodoulou, C., & Cooper, C. (2003). What is osteoporosis?

Chicago Style (17th ed.) Citation

Christodoulou, C., and C. Cooper. What Is Osteoporosis? 2003.

MLA (9th ed.) Citation

Christodoulou, C., and C. Cooper. What Is Osteoporosis? 2003.

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