Negri, S., Plato, J. v., & Ranta, A. (2001). Structural proof theory. Cambridge University Press.
Cita Chicago (17th ed.)Negri, Sara, Jan von Plato, i Aarne Ranta. Structural Proof Theory. Cambridge (GB) ; New York: Cambridge University Press, 2001.
Cita MLA (8th ed.)Negri, Sara, et al. Structural Proof Theory. Cambridge University Press, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.