Cita APA (7a ed.)

Gentzen, G., & Szabo, M. E. (1969). The collected papers of Gerhard Gentzen. North-Holland.

Cita Chicago Style (17a ed.)

Gentzen, Gerhard, y M. E. Szabo. The Collected Papers of Gerhard Gentzen. Amsterdam [etc.]: North-Holland, 1969.

Cita MLA (9a ed.)

Gentzen, Gerhard, y M. E. Szabo. The Collected Papers of Gerhard Gentzen. North-Holland, 1969.