Cita APA (7a ed.)

Simpson, S. G., & Simpson, S. G. (1987). Logic and Combinatorics. American Mathematical Society.

Cita Chicago Style (17a ed.)

Simpson, Stephen G., y Stephen G. Simpson. Logic and Combinatorics. Providence: American Mathematical Society, 1987.

Cita MLA (8a ed.)

Simpson, Stephen G., y Stephen G. Simpson. Logic and Combinatorics. American Mathematical Society, 1987.