Karen Christensen. Encyclopedia of Community: From the Village to the Virtual World. SAGE.
Citazione stile Chigago Style (17a edizione)Karen Christensen. Encyclopedia of Community: From the Village to the Virtual World. SAGE.
Citatione MLA (8a ed.)Karen Christensen. Encyclopedia of Community: From the Village to the Virtual World. SAGE.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.