Gunn, R. A., Greenspan, J. R., & Rolfs, R. T. (1993). Barrier contraceptive and sexually transmitted disease study is questioned.
استشهاد بنمط شيكاغوGunn, R A., J R. Greenspan, و R T. Rolfs. Barrier Contraceptive and Sexually Transmitted Disease Study Is Questioned. 1993.
MLA استشهادGunn, R A., J R. Greenspan, و R T. Rolfs. Barrier Contraceptive and Sexually Transmitted Disease Study Is Questioned. 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.