"Journal of Perinatal Medicine", 28.1 (2000): 7-73. Retrieved 21 May. 2013, from http://www.degruyter.com/view/j/jpme.2000.28.issue-1/issue-files/jpme.2000.28.issue-1.xml

Journal of Perinatal Medicine (2000), 28(1), pp. 7-73. Retrieved 21 May. 2013, from http://www.degruyter.com/view/j/jpme.2000.28.issue-1/issue-files/jpme.2000.28.issue-1.xml

Journal of Perinatal Medicine. 2000. 28(1): 7-73. Retrieved 21 May. 2013, from http://www.degruyter.com/view/j/jpme.2000.28.issue-1/issue-files/jpme.2000.28.issue-1.xml