Kumar, Shiv, and Ranjana Vohra. “Use of Online Public Access Catalogue in Guru Nanak Dev University Library, Amritsar: A Study”. Journal of Information and Knowledge 48, no. 5 (September 10, 2011): 519–528. Accessed September 19, 2025. https://www.srels.org/index.php/sjim/article/view/43954.