APA Citatie

Morera Brenes, B., Sierra Ramos, R., Barrantes Mesén, R., Jonasson, J., & Nord, C. E. (1994). Helicobacter pylori in a Costa Rican dyspeptic patient population.

Chicago Style citaat

Morera Brenes, Bernal, Rafaela Sierra Ramos, Ramiro Barrantes Mesén, J. Jonasson, en C. E. Nord. Helicobacter Pylori in a Costa Rican Dyspeptic Patient Population. 1994.

MLA citatie

Morera Brenes, Bernal, et al. Helicobacter Pylori in a Costa Rican Dyspeptic Patient Population. 1994.