APA (7th ed.) Citation

AJ, S., BL, D. S., B, F., NV, H., J, K., PK, V., . . . Mack, T. (2002). Risk factors for breast cancer at young ages in twins: An international population-based study. JNCI: Journal of the National Cancer Institute, 94(16), 1238.

Chicago Style (17th ed.) Citation

AJ, Swerdlow, et al. "Risk Factors for Breast Cancer at Young Ages in Twins: An International Population-based Study." JNCI: Journal of the National Cancer Institute 94, no. 16 (2002): 1238.

MLA (9th ed.) Citation

AJ, Swerdlow, et al. "Risk Factors for Breast Cancer at Young Ages in Twins: An International Population-based Study." JNCI: Journal of the National Cancer Institute, vol. 94, no. 16, 2002, p. 1238.

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