Wu และ Jiuling. (2000) Contraceptive use behaviour among never married young women who have unwanted pregnancy : an exploratory study in Beijing, China. Mahidol University,:ม.ป.ท.Wu และ Jiuling. 2000. Contraceptive use behaviour among never married young women who have unwanted pregnancy : an exploratory study in Beijing, China. ม.ป.ท.:Mahidol University,;Wu และ Jiuling. Contraceptive use behaviour among never married young women who have unwanted pregnancy : an exploratory study in Beijing, China. ม.ป.ท.:Mahidol University, 2000. Print.