Engelhardt. The Farm at Holstein Dip. University of Iowa Press.
Lua i Stíl Chicago (17ú heag.)Engelhardt. The Farm at Holstein Dip. University of Iowa Press.
Lua MLA (9ú heag.)Engelhardt. The Farm at Holstein Dip. University of Iowa Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.