Titchmarsh, E. C. (1962). Eigenfunction expansions associated with second-order differential equations (2d ed.). Clarendon Press.
芝加哥风格引文Titchmarsh, E. C. Eigenfunction Expansions Associated with Second-order Differential Equations. 2d ed. Oxford: Clarendon Press, 1962.
MLA引文Titchmarsh, E. C. Eigenfunction Expansions Associated with Second-order Differential Equations. 2d ed. Clarendon Press, 1962.
警告：这些引文格式不一定是100％准确.