APA aipamena

Ma, H., Henderson, K. D., Sullivan-Halley, J., Duan, L., Marshall, S. F., Ursin, G., . . . Bernstein, L. (2010). Pregnancy-related factors and the risk of breast carcinoma in situ and invasive breast cancer among postmenopausal women in the California Teachers Study cohort. BioMed Central.

Chicago Style aipamena

Ma, Huiyan, et al. Pregnancy-related Factors and the Risk of Breast Carcinoma in Situ and Invasive Breast Cancer Among Postmenopausal Women in the California Teachers Study Cohort. BioMed Central, 2010.

MLA aipamena

Ma, Huiyan, et al. Pregnancy-related Factors and the Risk of Breast Carcinoma in Situ and Invasive Breast Cancer Among Postmenopausal Women in the California Teachers Study Cohort. BioMed Central, 2010.