APA (7th ed.) Citation

Pavord, I., & Birring, S. (2003). COPD and hepatitis C.

Chicago Style (17th ed.) Citation

Pavord, I., and S. Birring. COPD and Hepatitis C. 2003.

MLA (9th ed.) Citation

Pavord, I., and S. Birring. COPD and Hepatitis C. 2003.

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