APA

Thorp J. M., Camargo C. A., McGee P. L., Harper M., Klebanoff M. A., Sorokin Y., Varner M. W., Wapner R. J., Caritis S. N., Iams J. D., Carpenter M. W., Peaceman A. M., Mercer B. M., Sciscione A., Rouse D. J., Ramin S. M. & Anderson G. B. (20130122). Vitamin D status and recurrent preterm birth: a nested case-control study in high-risk women. : BJOG : an international journal of obstetrics and gynaecology.

Chicago

Thorp J M, Camargo C A, McGee P L, Harper M, Klebanoff M A, Sorokin Y, Varner M W, Wapner R J, Caritis S N, Iams J D, Carpenter M W, Peaceman A M, Mercer B M, Sciscione A, Rouse D J, Ramin S M and Anderson G B. 20130122. Vitamin D status and recurrent preterm birth: a nested case-control study in high-risk women. : BJOG : an international journal of obstetrics and gynaecology.

Harvard

Thorp J. M., Camargo C. A., McGee P. L., Harper M., Klebanoff M. A., Sorokin Y., Varner M. W., Wapner R. J., Caritis S. N., Iams J. D., Carpenter M. W., Peaceman A. M., Mercer B. M., Sciscione A., Rouse D. J., Ramin S. M. and Anderson G. B. (20130122). Vitamin D status and recurrent preterm birth: a nested case-control study in high-risk women. : BJOG : an international journal of obstetrics and gynaecology.

MLA

Thorp J M, Camargo C A, McGee P L, Harper M, Klebanoff M A, Sorokin Y, Varner M W, Wapner R J, Caritis S N, Iams J D, Carpenter M W, Peaceman A M, Mercer B M, Sciscione A, Rouse D J, Ramin S M and Anderson G B. Vitamin D status and recurrent preterm birth: a nested case-control study in high-risk women. : BJOG : an international journal of obstetrics and gynaecology. 20130122.