توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Hefnawy, A. E., Youssef, S., Aguilera, P. V., Rodríguez, C. V., & Pérez, J. L. T. (2014, January). The Relationship between Selenium and T3 in Selenium Supplemented and Nonsupplemented Ewes and Their Lambs. Veterinary Medicine International.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Hefnawy, Abd Elghany, Seham Youssef, P. Villalobos Aguilera, C. Valverde Rodríguez, و J. L. Tórtora Pérez. "The Relationship Between Selenium and T3 in Selenium Supplemented and Nonsupplemented Ewes and Their Lambs." Veterinary Medicine International Jan. 2014.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Hefnawy, Abd Elghany, et al. "The Relationship Between Selenium and T3 in Selenium Supplemented and Nonsupplemented Ewes and Their Lambs." Veterinary Medicine International, Jan. 2014.