Cita APA (7a ed.)

Lanczos, C. (1986). The variational principles of mechanics (4th ed.). Dover.

Cita Chicago Style (17a ed.)

Lanczos, Cornelius. The Variational Principles of Mechanics. 4th ed. New York: Dover, 1986.

Cita MLA (9a ed.)

Lanczos, Cornelius. The Variational Principles of Mechanics. 4th ed. Dover, 1986.