Subbian และ Ravi. (1999) Proximate determinants of high-risk sexual behavior and its effect on sexual morbidity among married men of Uttar Pradesh, India. Mahidol University,:ม.ป.ท.Subbian และ Ravi. 1999. Proximate determinants of high-risk sexual behavior and its effect on sexual morbidity among married men of Uttar Pradesh, India. ม.ป.ท.:Mahidol University,;Subbian และ Ravi. Proximate determinants of high-risk sexual behavior and its effect on sexual morbidity among married men of Uttar Pradesh, India. ม.ป.ท.:Mahidol University, 1999. Print.