APA aipamena

Schutte, K., & Crossley, J. (1977). Proof theory. Springer-Verlag.

Chicago Style aipamena

Schutte, Kurt, and J.N Crossley. Proof Theory. New York: Springer-Verlag, 1977.

MLA aipamena

Schutte, Kurt, and J.N Crossley. Proof Theory. Springer-Verlag, 1977.