APA (7th ed.) Citation

Giusti, E. (2003). Direct methods in the calculus of variations. World Scientific.

Chicago Style (17th ed.) Citation

Giusti, Enrico. Direct Methods in the Calculus of Variations. New Jersey [u.a.]: World Scientific, 2003.

MLA (9th ed.) Citation

Giusti, Enrico. Direct Methods in the Calculus of Variations. World Scientific, 2003.

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