Sukpinush Sankasuwan. (2000) Effects of using childbirth preparation program on labor pain coping behavior, duration of first stage of labor, and perception of childbirth experience in primiparas. Mahidol University,:ม.ป.ท.Sukpinush Sankasuwan. 2000. Effects of using childbirth preparation program on labor pain coping behavior, duration of first stage of labor, and perception of childbirth experience in primiparas. ม.ป.ท.:Mahidol University,;Sukpinush Sankasuwan. Effects of using childbirth preparation program on labor pain coping behavior, duration of first stage of labor, and perception of childbirth experience in primiparas. ม.ป.ท.:Mahidol University, 2000. Print.