Prasad, Deepak, and Tsuyoshi Usagawa. “Towards Development of OER Derived Custom-Built Open Textbooks: A Baseline Survey of University Teachers at the University of the South Pacific”. The International Review of Research in Open and Distributed Learning 15, no. 4 (August 15, 2014). Accessed September 30, 2022. https://www.irrodl.org/index.php/irrodl/article/view/1873.