Cita APA (7a ed.)

Beck, D. E., & Wexner, S. D. (1992). Fundamentals of anorectal surgery. McGraw-Hill.

Cita Chicago Style (17a ed.)

Beck, David E., y Steven D. Wexner. Fundamentals of Anorectal Surgery. New York [etc.]: McGraw-Hill, 1992.

Cita MLA (9a ed.)

Beck, David E., y Steven D. Wexner. Fundamentals of Anorectal Surgery. McGraw-Hill, 1992.