Jewell, D. (1975). Ulcerative colitis.
Cita Chicago (17th ed.)Jewell, D. Ulcerative Colitis. 1975.
Cita MLA (9th ed.)Jewell, D. Ulcerative Colitis. 1975.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)