Titchmarsh, E. C. (1962). Eigenfunction expansions: Associated with second-order differential equations (2nd ed.). Clarendon Press.
Chicago Style (17th ed.) CitationTitchmarsh, E. C. Eigenfunction Expansions: Associated with Second-order Differential Equations. 2nd ed. Oxford: Clarendon Press, 1962.
MLA (8th ed.) CitationTitchmarsh, E. C. Eigenfunction Expansions: Associated with Second-order Differential Equations. 2nd ed. Clarendon Press, 1962.
Warning: These citations may not always be 100% accurate.