Ljubojevic, Milos, Vojkan Vaskovic, Srecko Stankovic, and Jelena Vaskovic. “Using Supplementary Video in Multimedia Instruction As a Teaching Tool to Increase Efficiency of Learning and Quality of Experience”. The International Review of Research in Open and Distributed Learning 15, no. 3 (June 16, 2014). Accessed November 26, 2024. https://www.irrodl.org/index.php/irrodl/article/view/1825.