Παραπομπή σε μορφή APA (7η εκδ.)

Michetti, P., Kreiss, C., Kotloff, K. L., Porta, N., Blanco, J. L., Bachmann, D., . . . Blum, A. L. (1999). Oral immunization with urease and Escherichia coli heat-labile enterotoxin is safe and immunogenic in Helicobacter pylori-infected adults. https://doi.org/10.1016/S0016-5085(99)70063-6

Παραπομπή σε μορφή Chicago (17η εκδ.)

Michetti, P., et al. Oral Immunization with Urease and Escherichia Coli Heat-labile Enterotoxin Is Safe and Immunogenic in Helicobacter Pylori-infected Adults. 1999. https://doi.org/10.1016/S0016-5085(99)70063-6.

Παραπομπή σε μορφή MLA (9th εκδ.)

Michetti, P., et al. Oral Immunization with Urease and Escherichia Coli Heat-labile Enterotoxin Is Safe and Immunogenic in Helicobacter Pylori-infected Adults. 1999. https://doi.org/10.1016/S0016-5085(99)70063-6.