Van de Vord, Rebecca, and Korolyn Pogue. “Teaching Time Investment: Does Online Really Take More Time Than Face-to-Face?”. The International Review of Research in Open and Distributed Learning 13, no. 3 (May 2, 2012): 132–146. Accessed April 24, 2024. https://www.irrodl.org/index.php/irrodl/article/view/1190.