Cita APA (7a ed.)

Simpson, S. G. (2009). Subsystems of second order arithmetic (2nd ed.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Simpson, Stephen G. Subsystems of Second Order Arithmetic. 2nd ed. Cambridge ; New York: Cambridge University Press, 2009.

Cita MLA (8a ed.)

Simpson, Stephen G. Subsystems of Second Order Arithmetic. 2nd ed. Cambridge University Press, 2009.