Cita APA (7a ed.)

de Simone, G. H., Boccardo, C., Calleri, D., Piazze, A., & Zimmer, W. (1994). Removal of foreign bodies from the tract upper digestive system by flexible endoscopy: Study of 75 cases.

Cita Chicago Style (17a ed.)

de Simone, Gustavo H., Carlos Boccardo, Daniel Calleri, Alvaro Piazze, y Walter Zimmer. Removal of Foreign Bodies from the Tract Upper Digestive System by Flexible Endoscopy: Study of 75 Cases. 1994.

Cita MLA (9a ed.)

de Simone, Gustavo H., et al. Removal of Foreign Bodies from the Tract Upper Digestive System by Flexible Endoscopy: Study of 75 Cases. 1994.