HUNT, D. (1977). Farm power and machinery management: Laboratory workand workbook.-- 7th ed. Iowa State University Press.
Lua i Stíl Chicago (17ú heag.)HUNT, Donnell. Farm Power and Machinery Management: Laboratory Workand Workbook.-- 7th Ed. Ames: Iowa State University Press, 1977.
Lua MLA (9ú heag.)HUNT, Donnell. Farm Power and Machinery Management: Laboratory Workand Workbook.-- 7th Ed. Iowa State University Press, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.