Cita APA (7a ed.)

Titchmarsh, E. C. (1958). Eigenfuntion expansions: Associated with second order differential equations. Oxford.

Cita Chicago Style (17a ed.)

Titchmarsh, Edward Charles. Eigenfuntion Expansions: Associated with Second Order Differential Equations. Londres: Oxford, 1958.

Cita MLA (8a ed.)

Titchmarsh, Edward Charles. Eigenfuntion Expansions: Associated with Second Order Differential Equations. Oxford, 1958.