Observations on 767 clinical pregnancies and 500 births after human in-vitro fertilization.

MLA

Steptoe, P. C., et al. “Observations on 767 Clinical Pregnancies and 500 Births after Human In-Vitro Fertilization.” Human Reproduction, vol. 1, no. 2, Apr. 1986, pp. 89–94. EBSCOhost, https://doi.org/10.1093/oxfordjournals.humrep.a136366.

APA

Steptoe, P. C., Edwards, R. G., & Walters, D. E. (1986). Observations on 767 clinical pregnancies and 500 births after human in-vitro fertilization. Human Reproduction, 1(2), 89–94. https://doi.org/10.1093/oxfordjournals.humrep.a136366

Chicago

Steptoe, P.C., R.G. Edwards, and D.E. Walters. 1986. “Observations on 767 Clinical Pregnancies and 500 Births after Human In-Vitro Fertilization.” Human Reproduction 1 (2): 89–94. doi:10.1093/oxfordjournals.humrep.a136366.