Harp, J., & Hofley, J. R. (1971). Poverty in Canada. Prentice-Hall of Canada.
Lua i Stíl Chicago (17ú heag.)Harp, John, agus John R. Hofley. Poverty in Canada. Scarborough, Ont: Prentice-Hall of Canada, 1971.
Lua MLA (9ú heag.)Harp, John, agus John R. Hofley. Poverty in Canada. Prentice-Hall of Canada, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.