APA (7th ed.) Citation

Heisenberg, W. (1966). Introduction to the unified field theory of elementary particles. Interscience.

Chicago Style (17th ed.) Citation

Heisenberg, Werner. Introduction to the Unified Field Theory of Elementary Particles. London, New York [etc.]: Interscience, 1966.

MLA (8th ed.) Citation

Heisenberg, Werner. Introduction to the Unified Field Theory of Elementary Particles. Interscience, 1966.

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