McGown, S. W. (2007). Valuable Volunteers: How to Find, Use, and Keep Them.
Citazione stile Chigago Style (17a edizione)McGown, Sue W. Valuable Volunteers: How to Find, Use, and Keep Them. 2007.
Citatione MLA (9a ed.)McGown, Sue W. Valuable Volunteers: How to Find, Use, and Keep Them. 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.