एपीए उद्धरण

Naveen Kumar. (2005). An elementary Course on Variational Problems in Calculus. Narosa Publishing House.

शिकागो स्टाइल उद्धरण

Naveen Kumar. An Elementary Course on Variational Problems in Calculus. New Delhi: Narosa Publishing House, 2005.

एमएलए उद्धरण

Naveen Kumar. An Elementary Course on Variational Problems in Calculus. Narosa Publishing House, 2005.