APA

Defranco E. A., Chang J. J., Macones G. A. & Muglia L. J. (20090618). The correlation in birth timing between singleton and twin gestations in the same mother. : The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.

Chicago

Defranco Emily A, Chang Jen Jen, Macones George A and Muglia Louis J. 20090618. The correlation in birth timing between singleton and twin gestations in the same mother. : The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.

Harvard

Defranco E. A., Chang J. J., Macones G. A. and Muglia L. J. (20090618). The correlation in birth timing between singleton and twin gestations in the same mother. : The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.

MLA

Defranco Emily A, Chang Jen Jen, Macones George A and Muglia Louis J. The correlation in birth timing between singleton and twin gestations in the same mother. : The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians. 20090618.