If there is a DOI:
Author last name, author first initial. (Year). Article title. Journal Title, volume(issue), page range. DOI
Sarker, S., Ahuja, M., Sarker, S., & Kirkeby, S. (2011). The role of communication and trust in global virtual teams: A social network perspective. Journal of Management Information Systems, 28(1), 273-309. http://doi.org/10.2753/MIS0742-1222280109
If there is no DOI, then use the home page of the journal website:
Author last name, author first initial. (Year). Article title. Journal Title, volume(issue), page range. Retrieved from journal home page
Jarvenpaa, S. L., & Leidner, D. E. (1999). Communication and trust in global virtual teams. Organization Science, 10(6), 791-815. Retrieved from http://pubsonline.informs.org/journal/orsc
Author last name, author first initial. (Year). Book title. Publication city and state: Publisher name.
DuFrene, D. D., & Lehman, C. M. (2012). Managing virtual teams. New York, NY: Business Expert Press.
If there is a DOI:
Author last name, author first initial. (Year). Ebook title. DOI
Wankel, C. (2009). Encyclopedia of business in today's world. http://doi.org/10.4135/9781412964289
If there is no DOI, then use the URL of the home page of the database:
Author last name, author first initial. (Year). Ebook title. Retrieved from database home page
​Gibson, C. B., & Cohen, S. G. (2003). Virtual teams that work: Creating conditions for virtual team effectiveness. Retrieved from http://www.ebscohost.com
Author last name, author first initial. (Date). Page title. Retrieved from Web page address
Carroll, B. (2007, December 5). Building trust in virtual teams. Retrieved from http://www.leadingvirtually.com/15/