Congenital vein valve aplasia.

MLA

Plate, G., et al. “Congenital Vein Valve Aplasia.” World Journal of Surgery, vol. 10, no. 6, Dec. 1986, pp. 929–34. EBSCOhost, https://doi.org/10.1007/BF01658642.

APA

Plate, G., Brudin, L., Eklöf, B., Jensen, R., & Ohlin, P. (1986). Congenital vein valve aplasia. World Journal of Surgery, 10(6), 929–934. https://doi.org/10.1007/BF01658642

Chicago

Plate, G, L Brudin, B Eklöf, R Jensen, and P Ohlin. 1986. “Congenital Vein Valve Aplasia.” World Journal of Surgery 10 (6): 929–34. doi:10.1007/BF01658642.