Παραπομπή APA

Gakhov, F. D. (1966). Boundary value problems. Pergamon Press.

Παραπομπή Chicago Style

Gakhov, F. D. Boundary Value Problems. Oxford, New York: Pergamon Press, 1966.

Παραπομπή MLA

Gakhov, F. D. Boundary Value Problems. Pergamon Press, 1966.