APA (7th ed.) Citation

Heisenberg, W., Eckart, C., & Hoyt, F. C. (1949). The physical principles of the quantum theory. Dover Publications, Inc.

Chicago Style (17th ed.) Citation

Heisenberg, Werner, Carl Eckart, and Frank C. Hoyt. The Physical Principles of the Quantum Theory. New York: Dover Publications, Inc, 1949.

MLA (8th ed.) Citation

Heisenberg, Werner, et al. The Physical Principles of the Quantum Theory. Dover Publications, Inc, 1949.