Nunthaporn Poungkaew. (2005) Effects of self-efficacy promoting program on breastfeeding behavior and duration among first-time working mothers. Mahidol University,:ม.ป.ท.Nunthaporn Poungkaew. 2005. Effects of self-efficacy promoting program on breastfeeding behavior and duration among first-time working mothers. ม.ป.ท.:Mahidol University,;Nunthaporn Poungkaew. Effects of self-efficacy promoting program on breastfeeding behavior and duration among first-time working mothers. ม.ป.ท.:Mahidol University, 2005. Print.