APA Edition Citation

Chopra, M., & Chopra, Y. L. (2001). Challenges before library and information science in new millenium. Ess Ess Publications.

Chicago Edition Citation

Chopra, Mamta, and Y. L. Chopra. Challenges Before Library and Information Science in New Millenium. Delhi: Ess Ess Publications, 2001.

MLA Edition Citation

Chopra, Mamta, and Y. L. Chopra. Challenges Before Library and Information Science in New Millenium. Ess Ess Publications, 2001.