Cita APA

Briggs, M. H. (1974). Letter: Vitamin A and the teratogenic risks of oral contraceptives.

Chicago Style Citation

Briggs, M H. Letter: Vitamin A and the Teratogenic Risks of Oral Contraceptives. 1974.

Cita MLA

Briggs, M H. Letter: Vitamin A and the Teratogenic Risks of Oral Contraceptives. 1974.

Atenció: Aquestes cites poden no estar 100% correctes.