Cita APA (7a ed.)

Velleman, D. J. (2006). How to prove it: A structured approach (2nd ed.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Velleman, Daniel J. How to Prove It: A Structured Approach. 2nd ed. Cambridge ; New York: Cambridge University Press, 2006.

Cita MLA (8a ed.)

Velleman, Daniel J. How to Prove It: A Structured Approach. 2nd ed. Cambridge University Press, 2006.

Precaución: Estas citas no son 100% exactas.