In Stevenson, S. C. (ed.): Online Fundraising Essentials, Second Edition, Wiley
Link: http://www.websm.org/index.php?fl=2&lact=1&bid=16482&parent=12
Data has been last edited on May 13 2013
Link: http://www.websm.org/index.php?fl=2&lact=1&bid=16482&parent=12
Data has been last edited on May 13 2013