Panisara Kunkitti และผู้แต่งคนอื่นๆ. (2007) The Expressions of oestrogen receptors alpha and progesterone receptors in the cervix of Dogs undergone open-and closed-cervix pyometra. Chulalongkorn University:ม.ป.ท.Panisara Kunkitti และผู้แต่งคนอื่นๆ. 2007. The Expressions of oestrogen receptors alpha and progesterone receptors in the cervix of Dogs undergone open-and closed-cervix pyometra. ม.ป.ท.:Chulalongkorn University;Panisara Kunkitti และผู้แต่งคนอื่นๆ. The Expressions of oestrogen receptors alpha and progesterone receptors in the cervix of Dogs undergone open-and closed-cervix pyometra. ม.ป.ท.:Chulalongkorn University, 2007. Print.