APA način citiranja

Fouad, Y. M., Mostafa, I., Yehia, R., & El-Khayat, H. (2014). Biomarkers of Barrett's esophagus. World J Gastrointest Pathophysiol.

Čikaški stil citiranja

Fouad, Yasser Mahrous, Ibrahim Mostafa, Reem Yehia, i Hisham El-Khayat. "Biomarkers of Barrett's Esophagus." World J Gastrointest Pathophysiol 2014.

MLA način citiranja

Fouad, Yasser Mahrous, Ibrahim Mostafa, Reem Yehia, i Hisham El-Khayat. "Biomarkers of Barrett's Esophagus." World J Gastrointest Pathophysiol 2014.