Cita APA (7a ed.)

Hermes, H., & Schmidt, D. (1973). Introduction to mathematical logic. Springer.

Cita Chicago Style (17a ed.)

Hermes, Hans, y Diana Schmidt. Introduction to Mathematical Logic. Berlin [etc.]: Springer, 1973.

Cita MLA (9a ed.)

Hermes, Hans, y Diana Schmidt. Introduction to Mathematical Logic. Springer, 1973.