Vertovec, Steven Socio-Cultural Diversity, MPI for the Study of Religious and Ethnic Diversity, Max Planck Society;
http://onlinelibrary.wiley.com/book/10.1002/9781444351071/homepage/about_the_general_editors.htm (Publisher version)
Vertovec, S. (2013). Circular migration. In I. Ness (Ed.), The encyclopedia of global human migration: Vol. 2: A - Cro (pp. 1053-1058). Chichester: Wiley-Blackwell.