APA引文

Naveen Kumar. (2005). Elementary course on variational problems in calculus (1st.). Narosa.

Chicago Edition Citation

Naveen Kumar. Elementary Course on Variational Problems in Calculus. 1st. New Delhi: Narosa, 2005.

MLA引文

Naveen Kumar. Elementary Course on Variational Problems in Calculus. 1st. Narosa, 2005.

警告：這些引文格式不一定是100％准確.