Cita APA

Titchmarsh, E. C. 1. (1946). Eigenfunction expansions associated with second-order differential equations. Clarendon Press.

Citación estilo Chicago

Titchmarsh, E. C. 1899-1963. Eigenfunction Expansions Associated With Second-order Differential Equations. Oxford: Clarendon Press, 1946.

Cita MLA

Titchmarsh, E. C. 1899-1963. Eigenfunction Expansions Associated With Second-order Differential Equations. Oxford: Clarendon Press, 1946.