Cita APA

Thoene, J. G., Burken, M. I., Hopkins, R. J., Russell, R. G., & Morris, J. G. (1991). Seropositivity to Helicobacter pylori: Lack of association with length of hospitalization.

Chicago Style Citation

Thoene, J G., M I. Burken, R J. Hopkins, R G. Russell, i J G. Morris. Seropositivity to Helicobacter Pylori: Lack of Association With Length of Hospitalization. 1991.

Cita MLA

Thoene, J G., et al. Seropositivity to Helicobacter Pylori: Lack of Association With Length of Hospitalization. 1991.