MLA
Boettcher, Judith V. "Design Levels for Distance and Online Learning." Online and Distance Learning: Concepts, Methodologies, Tools, and Applications, edited by Lawrence A. Tomei, IGI Global, 2008, pp. 1763-1773. https://doi.org/10.4018/978-1-59904-935-9.ch141
APA
Boettcher, J. V. (2008). Design Levels for Distance and Online Learning. In L. Tomei (Ed.), Online and Distance Learning: Concepts, Methodologies, Tools, and Applications (pp. 1763-1773). IGI Global. https://doi.org/10.4018/978-1-59904-935-9.ch141
Chicago
Boettcher, Judith V. "Design Levels for Distance and Online Learning." In Online and Distance Learning: Concepts, Methodologies, Tools, and Applications, edited by Lawrence A. Tomei, 1763-1773. Hershey, PA: IGI Global, 2008. https://doi.org/10.4018/978-1-59904-935-9.ch141
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