APA (7th ed.) Citation

G, S., A, C., H, G., J, O., & F, A. (2008). Primary carcinoid tumors of the liver. World journal of surgical oncology, 6, 91. https://doi.org/10.1186/1477-7819-6-91

Chicago Style (17th ed.) Citation

G, Schwartz, Colanta A, Gaetz H, Olichney J, and Attiyeh F. "Primary Carcinoid Tumors of the Liver." World Journal of Surgical Oncology 6 (2008): 91. https://doi.org/10.1186/1477-7819-6-91.

MLA (9th ed.) Citation

G, Schwartz, et al. "Primary Carcinoid Tumors of the Liver." World Journal of Surgical Oncology, vol. 6, 2008, p. 91, https://doi.org/10.1186/1477-7819-6-91.