APA Edition Citation

Lanczos, C. (2015). The variational principles of mechanics (4.).

Chicago Edition Citation

Lanczos, Cornelius. The Variational Principles of Mechanics. 4. Dover Publications, INC, 2015.

MLA Edition Citation

Lanczos, Cornelius. The Variational Principles of Mechanics. 4. 2015.

Warning: These citations may not always be 100% accurate.