APA

Girsen A. I., Mayo J. A., Carmichael S. L., Phibbs C. S., Shachar B. Z., Stevenson D. K., Lyell D. J., Shaw G. M. & Gould J. B. (20161213). Women's prepregnancy underweight as a risk factor for preterm birth: a retrospective study. : BJOG : an international journal of obstetrics and gynaecology.

Chicago

Girsen A I, Mayo J A, Carmichael S L, Phibbs C S, Shachar B Z, Stevenson D K, Lyell D J, Shaw G M and Gould J B. 20161213. Women's prepregnancy underweight as a risk factor for preterm birth: a retrospective study. : BJOG : an international journal of obstetrics and gynaecology.

Harvard

Girsen A. I., Mayo J. A., Carmichael S. L., Phibbs C. S., Shachar B. Z., Stevenson D. K., Lyell D. J., Shaw G. M. and Gould J. B. (20161213). Women's prepregnancy underweight as a risk factor for preterm birth: a retrospective study. : BJOG : an international journal of obstetrics and gynaecology.

MLA

Girsen A I, Mayo J A, Carmichael S L, Phibbs C S, Shachar B Z, Stevenson D K, Lyell D J, Shaw G M and Gould J B. Women's prepregnancy underweight as a risk factor for preterm birth: a retrospective study. : BJOG : an international journal of obstetrics and gynaecology. 20161213.