Textbook of physics. Under the editorship of R. Kronig in collaboration with J. De Boer [and others] With biographical notes and tables by J. Korringa.
The optical basis of the theory of valence / by R. de L. Kronig
Band spectra and molecular structure / by R. de L. Kronig
Oral history interview with Ralph de Laer Kronig, 1962 November 12
Isidor Isaac Rabi, Stories from the early days of quantum mechanics. Transcribed and edited by R. Fraser Code from a colloquium delivered to the University of Toronto physics department on 5 April 1979.