Cita APA (7a ed.)

Morelli Brum, R., Praderi Gambardella, L. A., Veirano, G., & Bermúdez, J. (1996). Perforated gastroduodenal ulcer. Laparoscopic treatment.

Cita Chicago Style (17a ed.)

Morelli Brum, Raúl, Luis A. Praderi Gambardella, Gustavo Veirano, y Jorge Bermúdez. Perforated Gastroduodenal Ulcer. Laparoscopic Treatment. 1996.

Cita MLA (9a ed.)

Morelli Brum, Raúl, et al. Perforated Gastroduodenal Ulcer. Laparoscopic Treatment. 1996.