APA

Mahendru A. A., Wilhelm-Benartzi C. S., Wilkinson I. B., McEniery C. M., Johnson S. & Lees C. (20170913). Gestational length assignment based on last menstrual period, first trimester crown-rump length, ovulation, and implantation timing. : Archives of gynecology and obstetrics.

Chicago

Mahendru Amita A, Wilhelm-Benartzi Charlotte S, Wilkinson Ian B, McEniery Carmel M, Johnson Sarah and Lees Christoph. 20170913. Gestational length assignment based on last menstrual period, first trimester crown-rump length, ovulation, and implantation timing. : Archives of gynecology and obstetrics.

Harvard

Mahendru A. A., Wilhelm-Benartzi C. S., Wilkinson I. B., McEniery C. M., Johnson S. and Lees C. (20170913). Gestational length assignment based on last menstrual period, first trimester crown-rump length, ovulation, and implantation timing. : Archives of gynecology and obstetrics.

MLA

Mahendru Amita A, Wilhelm-Benartzi Charlotte S, Wilkinson Ian B, McEniery Carmel M, Johnson Sarah and Lees Christoph. Gestational length assignment based on last menstrual period, first trimester crown-rump length, ovulation, and implantation timing. : Archives of gynecology and obstetrics. 20170913.