Lietaer, Bernard; Hallsmith, Gwendolyn (2006). "Community Currency Guide"(PDF). Global Community Initiatives. 24 Ocak 2013 tarihinde kaynağından(PDF) arşivlendi. Erişim tarihi: 18 Haziran 2015.
Costanza, Robert; Farley, Joshua; Flomenhoft, Gary; Blake, Jonathan; Chappelle, David; Chiota, Matias; Cornelius, Kelsey; Dubin, Adam; Eisel, Bethany; Gilmartin, Megan; Kirschner, Amy; Markowitz, Laura; Mehta, Kriti; Murray, Adam; O’Dowd, Thomas; Rizza, Jordan; Sparacino, Lauren; Taylor, Todd; Turner, Alicia; Tusinski, Walter; van Dis, Katrina (12 Aralık 2003). "Complementary Currencies as a Method to Improve Local Sustainable Economic Welfare"(PDF). Ecological Economics. 12 Haziran 2009 tarihinde kaynağından(PDF) arşivlendi.
Lietaer, Bernard; Hallsmith, Gwendolyn (2006). "Community Currency Guide"(PDF). Global Community Initiatives. 24 Ocak 2013 tarihinde kaynağından(PDF) arşivlendi. Erişim tarihi: 18 Haziran 2015.