APA (7th ed.) Citation

El'sgol'c, L. E. (1962). Calculus of variations. Pergamon Press [u.a.].

Chicago Style (17th ed.) Citation

El'sgol'c, Lev Ernestovic. Calculus of Variations. London [u.a.]: Pergamon Press [u.a.], 1962.

MLA (9th ed.) Citation

El'sgol'c, Lev Ernestovic. Calculus of Variations. Pergamon Press [u.a.], 1962.

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