APA (7th ed.) Citation

Heitler, W. (1954). The quantum theory of radiation (3rd edition.). Clarendon Press.

Chicago Style (17th ed.) Citation

Heitler, W. The Quantum Theory of Radiation. 3rd edition. Oxford: Clarendon Press, 1954.

MLA (8th ed.) Citation

Heitler, W. The Quantum Theory of Radiation. 3rd edition. Clarendon Press, 1954.

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