APA (7th ed.) Citation

Apter Dan, Pukkala Eero, Luostarinen Tapio, Hemminki Elina, & Hakulinen Timo. (2002). Oral contraceptive use before first birth and risk of breast cancer: A case control study. BMC.

Chicago Style (17th ed.) Citation

Apter Dan, Pukkala Eero, Luostarinen Tapio, Hemminki Elina, and Hakulinen Timo. Oral Contraceptive Use Before First Birth and Risk of Breast Cancer: A Case Control Study. BMC, 2002.

MLA (9th ed.) Citation

Apter Dan, et al. Oral Contraceptive Use Before First Birth and Risk of Breast Cancer: A Case Control Study. BMC, 2002.