ScienceDirect (Online service) & Ludwig, G. (1968). Wave mechanics ([1st ed.].). Pergamon Press.
Chicago Style (17th ed.) CitationScienceDirect (Online service) and Günther Ludwig. Wave Mechanics. [1st ed.]. Oxford, New York: Pergamon Press, 1968.
MLA (9th ed.) CitationScienceDirect (Online service) and Günther Ludwig. Wave Mechanics. [1st ed.]. Pergamon Press, 1968.
Warning: These citations may not always be 100% accurate.