APA (7th ed.) Citation

Elsgolts, L., & Yankovsky, G. (1973). Differential equations and the calculus of variations. MIR Publishers.

Chicago Style (17th ed.) Citation

Elsgolts, L., and George Yankovsky. Differential Equations and the Calculus of Variations. Moscow: MIR Publishers, 1973.

MLA (8th ed.) Citation

Elsgolts, L., and George Yankovsky. Differential Equations and the Calculus of Variations. MIR Publishers, 1973.

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