Lawagan, E. (2000). Gastritis: The pain in the belly. Mr. & Ms..
Cita Chicago (17th ed.)Lawagan, Ernee. "Gastritis: The Pain in the Belly." Mr. & Ms. 2000.
Cita MLA (9th ed.)Lawagan, Ernee. "Gastritis: The Pain in the Belly." Mr. & Ms., 2000.
Atenció: Aquestes cites poden no estar 100% correctes.