Johan และ Jonhar. (1990) Unmet need for contraception in Indonesia : a secondary data analysis of the 1987 national Indonesia contraceptive prevalence survey. Mahidol University,:ม.ป.ท.Johan และ Jonhar. 1990. Unmet need for contraception in Indonesia : a secondary data analysis of the 1987 national Indonesia contraceptive prevalence survey. ม.ป.ท.:Mahidol University,;Johan และ Jonhar. Unmet need for contraception in Indonesia : a secondary data analysis of the 1987 national Indonesia contraceptive prevalence survey. ม.ป.ท.:Mahidol University, 1990. Print.