Παραπομπή APA

Lanczos, C. (1977). Variational principles of mechanics .-4thed (4th ed.). University of Toronto Press.

Παραπομπή Chicago Style

Lanczos, Cornelius. Variational Principles of Mechanics .-4thed. 4th ed. Toronto: University of Toronto Press, 1977.

Παραπομπή MLA

Lanczos, Cornelius. Variational Principles of Mechanics .-4thed. 4th ed. University of Toronto Press, 1977.