APA

Gupta AS, . (2005). Calculus of variations with applications. New Delhi: Prentice Hall.

Chicago

Gupta AS, . 2005. Calculus of variations with applications. New Delhi: Prentice Hall.

Harvard

Gupta AS, . (2005). Calculus of variations with applications. New Delhi: Prentice Hall.

MLA

Gupta AS, . Calculus of variations with applications. New Delhi: Prentice Hall. 2005.