MLA
Langdon, Christoph Schlueter, and Alexander Hars. "Open Source Software Business Models and Customer Involvement Economics." Electronic Commerce: Concepts, Methodologies, Tools, and Applications, edited by Annie Becker, IGI Global, 2008, pp. 240-249. https://doi.org/10.4018/978-1-59904-943-4.ch022
APA
Langdon, C. S. & Hars, A. (2008). Open Source Software Business Models and Customer Involvement Economics. In A. Becker (Ed.), Electronic Commerce: Concepts, Methodologies, Tools, and Applications (pp. 240-249). IGI Global. https://doi.org/10.4018/978-1-59904-943-4.ch022
Chicago
Langdon, Christoph Schlueter, and Alexander Hars. "Open Source Software Business Models and Customer Involvement Economics." In Electronic Commerce: Concepts, Methodologies, Tools, and Applications, edited by Annie Becker, 240-249. Hershey, PA: IGI Global, 2008. https://doi.org/10.4018/978-1-59904-943-4.ch022
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