APA (7th ed.) Citation

Bohr, N., & Kalckar, J. (1985). Foundations of quantum physics I (1926-1932). North-Holland Physics Pub..

Chicago Style (17th ed.) Citation

Bohr, Niels, and Jørgen Kalckar. Foundations of Quantum Physics I (1926-1932). Amsterdam: North-Holland Physics Pub., 1985.

MLA (9th ed.) Citation

Bohr, Niels, and Jørgen Kalckar. Foundations of Quantum Physics I (1926-1932). North-Holland Physics Pub., 1985.