Goldwin, R. A., & Wilkins, R. (1963). Why foreign aid? Public Affairs Conference Center, University of Chicago.
Lua i Stíl Chicago (17ú heag.)Goldwin, Robert A., agus Roy Wilkins. Why Foreign Aid? [Chicago]: Public Affairs Conference Center, University of Chicago, 1963.
Lua MLA (9ú heag.)Goldwin, Robert A., agus Roy Wilkins. Why Foreign Aid? Public Affairs Conference Center, University of Chicago, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.