APA način citiranja

Gravina, A. G., Zagari, R. M., De Musis, C., Romano, L., Loguercio, C., & Romano, M. (2018). Helicobacter pylori and extragastric diseases: A review. World J Gastroenterol.

Čikaški stil citiranja

Gravina, Antonietta Gerarda, Rocco Maurizio Zagari, Cristiana De Musis, Lorenzo Romano, Carmelina Loguercio, i Marco Romano. "Helicobacter Pylori and Extragastric Diseases: A Review." World J Gastroenterol 2018.

MLA način citiranja

Gravina, Antonietta Gerarda, et al. "Helicobacter Pylori and Extragastric Diseases: A Review." World J Gastroenterol 2018.