APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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