APA (7th ed.) Citation

Hilbert, D., & Ackerman, W. (1950). Principles of mathematical logic. Chelsea.

Chicago Style (17th ed.) Citation

Hilbert, David, and W. Ackerman. Principles of Mathematical Logic. Nueva York: Chelsea, 1950.

MLA (9th ed.) Citation

Hilbert, David, and W. Ackerman. Principles of Mathematical Logic. Chelsea, 1950.