APA (7th ed.) Citation

Heisenberg, W. (1950). The physical principles of the quantum theory. Dover Publications.

Chicago Style (17th ed.) Citation

Heisenberg, Werner. The Physical Principles of the Quantum Theory. [New York]: Dover Publications, 1950.

MLA (8th ed.) Citation

Heisenberg, Werner. The Physical Principles of the Quantum Theory. Dover Publications, 1950.

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