Cita APA (7a ed.)

Gibson, P., & Jewell, D. (1985). Sulphasalazine and derivatives, natural killer activity and ulcerative colitis.

Cita Chicago Style (17a ed.)

Gibson, P., y D. Jewell. Sulphasalazine and Derivatives, Natural Killer Activity and Ulcerative Colitis. 1985.

Cita MLA (9a ed.)

Gibson, P., y D. Jewell. Sulphasalazine and Derivatives, Natural Killer Activity and Ulcerative Colitis. 1985.