Chewe, P. C., and E. M. M. Chitumbo. “Perceptions of Distance Students on the Efficacy of Online Public Access Catalogue As an Information Retrieval Tool at the University of Zambia”. Zambia ICT Journal, vol. 2, no. 1, June 2018, pp. 1-6, doi:10.33260/zictjournal.v2i1.40.