Nelson, R. L. (1970). Economic factors in growth of corporation giving. National Bureau of Economic Research.
Lua i Stíl Chicago (17ú heag.)Nelson, Ralph Lowell. Economic Factors in Growth of Corporation Giving. New York: National Bureau of Economic Research, 1970.
Lua MLA (9ú heag.)Nelson, Ralph Lowell. Economic Factors in Growth of Corporation Giving. National Bureau of Economic Research, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.