Dyfyniad APA

MacMahon, B., Cole, P., Lin, T. M., Lowe, C. R., Mirra, A. P., Ravnihar, B., . . . Yuasa, S. (1970). Age at first birth and breast cancer risk.

Dyfyniad Arddull Chicago

MacMahon, B., P. Cole, T. M. Lin, C. R. Lowe, A. P. Mirra, B. Ravnihar, E. J. Salber, V. G. Valaoras, and S. Yuasa. Age At First Birth and Breast Cancer Risk. 1970.

Dyfyniad MLA

MacMahon, B., et al. Age At First Birth and Breast Cancer Risk. 1970.

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