Citazione Stile APA (7a Edizione)

Smullyan, R. M. (1993). Recursion theory for metamathematics. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Smullyan, Raymond M. Recursion Theory for Metamathematics. New York: Oxford University Press, 1993.

Citatione MLA (9a ed.)

Smullyan, Raymond M. Recursion Theory for Metamathematics. Oxford University Press, 1993.