MLA
Moraes, Wellington and Alberto de Medeiros Jr. "Impacts and Revenues Models from Brazilian Portals." Encyclopedia of Portal Technologies and Applications. IGI Global, 2007. 476-481. Web. 20 Apr. 2018. doi:10.4018/978-1-59140-989-2.ch080
APA
Moraes, W., & de Medeiros Jr., A. (2007). Impacts and Revenues Models from Brazilian Portals. In A. Tatnall (Ed.), Encyclopedia of Portal Technologies and Applications (pp. 476-481). Hershey, PA: IGI Global. doi:10.4018/978-1-59140-989-2.ch080
Chicago
Moraes, Wellington and Alberto de Medeiros Jr. "Impacts and Revenues Models from Brazilian Portals." In Encyclopedia of Portal Technologies and Applications, ed. Arthur Tatnall, 476-481 (2007), accessed April 20, 2018. doi:10.4018/978-1-59140-989-2.ch080
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