Siriwan Yuenyong และผู้แต่งคนอื่นๆ. (2007) Effects of a close female relative support during labour and delivery on duration of active labour, incidence of spontaneous delivery, and satisfaction with childbirth experience. Chulalongkorn University:ม.ป.ท.Siriwan Yuenyong และผู้แต่งคนอื่นๆ. 2007. Effects of a close female relative support during labour and delivery on duration of active labour, incidence of spontaneous delivery, and satisfaction with childbirth experience. ม.ป.ท.:Chulalongkorn University;Siriwan Yuenyong และผู้แต่งคนอื่นๆ. Effects of a close female relative support during labour and delivery on duration of active labour, incidence of spontaneous delivery, and satisfaction with childbirth experience. ม.ป.ท.:Chulalongkorn University, 2007. Print.