Παραπομπή APA

Kumar, R., & Kumar,Nagendra. (2013). Differential equations and calculus of variations. CBS.

Παραπομπή Chicago Style

Kumar, Rakesh, και Kumar,Nagendra. Differential Equations and Calculus of Variations. New Delhi: CBS, 2013.

Παραπομπή MLA

Kumar, Rakesh, και Kumar,Nagendra. Differential Equations and Calculus of Variations. CBS, 2013.