Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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