Cita APA (7th ed.)
(2021). Peptic Ulcer Disease. IntechOpen.
Cita Chicago (17th ed.)
Peptic Ulcer Disease. IntechOpen, 2021.
Cita MLA (9th ed.)
Peptic Ulcer Disease. IntechOpen, 2021.
Atenció: Aquestes cites poden no estar 100% correctes.