Boyd. A Life on the Middle West's Never-Ending Frontier. University of Iowa Press.
Lua i Stíl Chicago (17ú heag.)Boyd. A Life on the Middle West's Never-Ending Frontier. University of Iowa Press.
Lua MLA (8ú heag.)Boyd. A Life on the Middle West's Never-Ending Frontier. University of Iowa Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.