APA aipamena

Hernández, F., Rivera, P., Sigarán, M. F., Aguilar-Ortiz, M., Miranda, J., Rodríguez-Jenkins, O., & Murillo, M. (1990). The first cases of Helicobacter pylori (Campylobacter pylori) reported from Costa Rica.

Chicago Style aipamena

Hernández, Francisco, Patricia Rivera, Manuel F. Sigarán, Manuel Aguilar-Ortiz, Jorge Miranda, Olger Rodríguez-Jenkins, y Mario Murillo. The First Cases of Helicobacter Pylori (Campylobacter Pylori) Reported From Costa Rica. 1990.

MLA aipamena

Hernández, Francisco, et al. The First Cases of Helicobacter Pylori (Campylobacter Pylori) Reported From Costa Rica. 1990.