Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

Velleman, Daniel J. How to Prove It: A Structured Approach. 2a. edición. New York, USA: Cambridge University Press, 2006.

Citatione MLA (9a ed.)

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