Collom, E. (2012). Equal Time, Equal Value: Community Currencies and Time Banking in the US. Ashgate Pub.
Chicago-Zitierstil (17. Ausg.)Collom, Ed. Equal Time, Equal Value: Community Currencies and Time Banking in the US. Farnham: Ashgate Pub, 2012.
MLA-Zitierstil (9. Ausg.)Collom, Ed. Equal Time, Equal Value: Community Currencies and Time Banking in the US. Ashgate Pub, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.