Cita APA (7a ed.)

Marshall, B. J., McCallum, R. W., Guerrant, R. L., & Mandell, G. L. (1991). Helicobacter pylori in peptic ulceration and gastritis. Blackwell Scientific Publications.

Cita Chicago Style (17a ed.)

Marshall, Barry J., Richard W. McCallum, Richard L. Guerrant, y Gerald L. Mandell. Helicobacter Pylori in Peptic Ulceration and Gastritis. Boston [etc.]: Blackwell Scientific Publications, 1991.

Cita MLA (9a ed.)

Marshall, Barry J., et al. Helicobacter Pylori in Peptic Ulceration and Gastritis. Blackwell Scientific Publications, 1991.