#Ken Blanchard. pg 7. "Go Team! Take your team to the Next Level." Berret-Koehler publishing Inc. SanFrancisco, CA. 2005
#[http://papers.ssrn.com/sol3/papers.cfm?abstract_id=634645 Kimble et al. (2000)] Effective Virtual Teams through Communities of Practice (Department of Management Science Research Paper Series, 00/9), University of Strathclyde, Strathclyde, UK, 2000.
#Ferrell, Betty; Nessa Coyle (2006). Textbook of Palliative Nursing (2 ed.). Oxford University Press US. p. 35. ISBN 0195175492
