Cita APA

Parsons, R. L., Beavis, J. P., & Salfield, J. B. (1975). Letter: Diarrhoea and colitis associated with antibiotic therapy.

Chicago Style Citation

Parsons, R L., J P. Beavis, i J B. Salfield. Letter: Diarrhoea and Colitis Associated With Antibiotic Therapy. 1975.

Cita MLA

Parsons, R L., J P. Beavis, i J B. Salfield. Letter: Diarrhoea and Colitis Associated With Antibiotic Therapy. 1975.