APA aipamena

Estrada, K. (2003). Smoking women and COPD. Philippine Star.

Chicago Style aipamena

Estrada, Kristine. "Smoking Women and COPD." Philippine Star 2003.

MLA aipamena

Estrada, Kristine. "Smoking Women and COPD." Philippine Star, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.