ProQuest (Firm), Lough, J., & Smith, C. (2003). Sites of insight: A guide to Colorado sacred places. University Press of Colorado.
Citazione stile Chigago Style (17a edizione)ProQuest (Firm), James Lough, e Christie Smith. Sites of Insight: A Guide to Colorado Sacred Places. Boulder, Colo.: University Press of Colorado, 2003.
Citatione MLA (9a ed.)ProQuest (Firm), et al. Sites of Insight: A Guide to Colorado Sacred Places. University Press of Colorado, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.