MLA
Langer, Gary R. "21st Century E-Student Services." Electronic Services: Concepts, Methodologies, Tools and Applications, edited by Information Resources Management Association, IGI Global, 2010, pp. 855-864. https://doi.org/10.4018/978-1-61520-967-5.ch053
APA
Langer, G. R. (2010). 21st Century E-Student Services. In I. Management Association (Ed.), Electronic Services: Concepts, Methodologies, Tools and Applications (pp. 855-864). IGI Global Scientific Publishing. https://doi.org/10.4018/978-1-61520-967-5.ch053
Chicago
Langer, Gary R. "21st Century E-Student Services." In Electronic Services: Concepts, Methodologies, Tools and Applications, edited by Information Resources Management Association, 855-864. Hershey, PA: IGI Global, 2010. https://doi.org/10.4018/978-1-61520-967-5.ch053
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