APA (7th ed.) Citation

Forsyth, A. R. (1960). Calculus of variations. Dover Publications.

Chicago Style (17th ed.) Citation

Forsyth, Andrew Russell. Calculus of Variations. New York: Dover Publications, 1960.

MLA (8th ed.) Citation

Forsyth, Andrew Russell. Calculus of Variations. Dover Publications, 1960.

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