Serum beta-human chorionic gonadotrophin levels in the early diagnosis of ectopic pregnancy.

MLA

Lundström, V., et al. “Serum Beta-Human Chorionic Gonadotrophin Levels in the Early Diagnosis of Ectopic Pregnancy.” Acta Obstetricia et Gynecologica Scandinavica, vol. 58, no. 3, 1979, pp. 231–33. EBSCOhost, https://doi.org/10.3109/00016347909154039.

APA

Lundström, V., Bremme, K., Eneroth, P., Nygård, I., & Sundvall, M. (1979). Serum beta-human chorionic gonadotrophin levels in the early diagnosis of ectopic pregnancy. Acta Obstetricia et Gynecologica Scandinavica, 58(3), 231–233. https://doi.org/10.3109/00016347909154039

Chicago

Lundström, V, K Bremme, P Eneroth, I Nygård, and M Sundvall. 1979. “Serum Beta-Human Chorionic Gonadotrophin Levels in the Early Diagnosis of Ectopic Pregnancy.” Acta Obstetricia et Gynecologica Scandinavica 58 (3): 231–33. doi:10.3109/00016347909154039.