MLA
Lerch, Carol M., et al. "Zone of Proximal Development and Scaffolding Online." Encyclopedia of Distance Learning, edited by Caroline Howard, et al., IGI Global, 2005, pp. 2075-2081. https://doi.org/10.4018/978-1-59140-555-9.ch317
APA
Lerch, C. M., Bilics, A. R., & Colley, B. (2005). Zone of Proximal Development and Scaffolding Online. In C. Howard, J. Boettcher, L. Justice, K. Schenk, P. Rogers, & G. Berg (Eds.), Encyclopedia of Distance Learning (pp. 2075-2081). IGI Global Scientific Publishing. https://doi.org/10.4018/978-1-59140-555-9.ch317
Chicago
Lerch, Carol M., Aandrea R. Bilics, and Binta Colley. "Zone of Proximal Development and Scaffolding Online." In Encyclopedia of Distance Learning, edited by Caroline Howard, et al., 2075-2081. Hershey, PA: IGI Global, 2005. https://doi.org/10.4018/978-1-59140-555-9.ch317
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