Higuchi และ Machiko. (1993) A study of factors affecting involvement of women as commercial sex workers and general workers. Mahidol University,:ม.ป.ท.Higuchi และ Machiko. 1993. A study of factors affecting involvement of women as commercial sex workers and general workers. ม.ป.ท.:Mahidol University,;Higuchi และ Machiko. A study of factors affecting involvement of women as commercial sex workers and general workers. ม.ป.ท.:Mahidol University, 1993. Print.