irls, irls. "learn this system". OER Commons. Institute for the Study of Knowledge Management in Education, 27 Aug. 2013. Web. 23 Apr. 2024. <https://oercommons.org/authoring/3576-learn-this-system>.
irls, i. (2013, August 27). learn this system. OER Commons. Retrieved April 23, 2024, from https://oercommons.org/authoring/3576-learn-this-system.