APA (7th ed.) Citation

Dirac, P. A. M. (1930). The Principles of quantum mechanics. Clarendon Pr.

Chicago Style (17th ed.) Citation

Dirac, P. A. M. The Principles of Quantum Mechanics. Oxford: Clarendon Pr, 1930.

MLA (9th ed.) Citation

Dirac, P. A. M. The Principles of Quantum Mechanics. Clarendon Pr, 1930.

Warning: These citations may not always be 100% accurate.