Cita APA (7a ed.)

Shackelford, R. T., Zuidema, G. D., & Ritchie, W. P. (1991). Shackelford's surgery of the alimentary tract (3rd ed.). Saunders.

Cita Chicago Style (17a ed.)

Shackelford, Richard T., George D. Zuidema, y Wallace P. Ritchie. Shackelford's Surgery of the Alimentary Tract. 3rd ed. Philadelphia [etc.]: Saunders, 1991.

Cita MLA (9a ed.)

Shackelford, Richard T., et al. Shackelford's Surgery of the Alimentary Tract. 3rd ed. Saunders, 1991.