Cita APA (7a ed.)

Fielding, L. P., & Welch, J. P. (1987). Intestinal obstruction. Churchill Livingstone.

Cita Chicago Style (17a ed.)

Fielding, L. P., y John P. Welch. Intestinal Obstruction. Edinburgh: Churchill Livingstone, 1987.

Cita MLA (9a ed.)

Fielding, L. P., y John P. Welch. Intestinal Obstruction. Churchill Livingstone, 1987.