APA (7th ed.) Citation

PS, T., EK, T., KM, F., TL, A., JY, T., & AG, T. (2009). Massive obscure-overt upper gastrointestinal bleeding secondary to hemobilia. Endoscopy, 41(2), E294. https://doi.org/10.1055/s-0029-1215072

Chicago Style (17th ed.) Citation

PS, Tan, Teo EK, Fock KM, Ang TL, Tan JY, and Tan AG. "Massive Obscure-overt Upper Gastrointestinal Bleeding Secondary to Hemobilia." Endoscopy 41, no. 2 (2009): E294. https://doi.org/10.1055/s-0029-1215072.

MLA (9th ed.) Citation

PS, Tan, et al. "Massive Obscure-overt Upper Gastrointestinal Bleeding Secondary to Hemobilia." Endoscopy, vol. 41, no. 2, 2009, p. E294, https://doi.org/10.1055/s-0029-1215072.