APA (7th ed.) Citation

Dacorogna, B. (2008). Direct methods in the calculus of variations (Second edition.). Springer. https://doi.org/10.1007/978-0-387-55249-1

Chicago Style (17th ed.) Citation

Dacorogna, Bernard. Direct Methods in the Calculus of Variations. Second edition. New York, NY: Springer, 2008. https://doi.org/10.1007/978-0-387-55249-1.

MLA (9th ed.) Citation

Dacorogna, Bernard. Direct Methods in the Calculus of Variations. Second edition. Springer, 2008. https://doi.org/10.1007/978-0-387-55249-1.