APA

(19990309). Society of American Gastrointestinal and Endoscopic Surgeons 1998 scientific session, Association of Endoscopic Surgeons of Great Britain and Ireland 1997 and 1998 scientific sessions, and the National meeting of the Italian Society for Endoscopic Surgery 1998. Abstracts. : Surgical endoscopy.

Chicago

19990309. Society of American Gastrointestinal and Endoscopic Surgeons 1998 scientific session, Association of Endoscopic Surgeons of Great Britain and Ireland 1997 and 1998 scientific sessions, and the National meeting of the Italian Society for Endoscopic Surgery 1998. Abstracts. : Surgical endoscopy.

Harvard

(19990309). Society of American Gastrointestinal and Endoscopic Surgeons 1998 scientific session, Association of Endoscopic Surgeons of Great Britain and Ireland 1997 and 1998 scientific sessions, and the National meeting of the Italian Society for Endoscopic Surgery 1998. Abstracts. : Surgical endoscopy.

MLA

Society of American Gastrointestinal and Endoscopic Surgeons 1998 scientific session, Association of Endoscopic Surgeons of Great Britain and Ireland 1997 and 1998 scientific sessions, and the National meeting of the Italian Society for Endoscopic Surgery 1998. Abstracts. : Surgical endoscopy. 19990309.