Cita APA

Bubb, F. A. (1974). Letter: Vitamin A, pregnancy, and oral contraceptives.

Chicago Style Citation

Bubb, F A. Letter: Vitamin A, Pregnancy, and Oral Contraceptives. 1974.

Cita MLA

Bubb, F A. Letter: Vitamin A, Pregnancy, and Oral Contraceptives. 1974.

Atenció: Aquestes cites poden no estar 100% correctes.