Cita APA

Lewin, J. P. (1974). N.H.S. Contraceptive Services.

Chicago Style Citation

Lewin, John P. N.H.S. Contraceptive Services. 1974.

Cita MLA

Lewin, John P. N.H.S. Contraceptive Services. 1974.

Atenció: Aquestes cites poden no estar 100% correctes.