Yong Keong, William Eng. “The Use of Importance-Performance Analysis (IPA) in Evaluating Web 2.0 Technologies in Malaysian Retail-Chain Business”. Sains Humanika 2, no. 3 (September 19, 2014). Accessed November 22, 2024. https://sainshumanika.utm.my/index.php/sainshumanika/article/view/437.