Παραπομπή APA

De Jager, E. M. (1974). Spectral theory and asymptotics of differential equations: Proceedings. Elsevier.

Παραπομπή Chicago Style

De Jager, E. M. Spectral Theory and Asymptotics of Differential Equations: Proceedings. New York: Elsevier, 1974.

Παραπομπή MLA

De Jager, E. M. Spectral Theory and Asymptotics of Differential Equations: Proceedings. Elsevier, 1974.