Hafertepe. The Material Culture of German Texans. Texas A&M University Press.
Lua i Stíl Chicago (17ú heag.)Hafertepe. The Material Culture of German Texans. Texas A&M University Press.
Lua MLA (9ú heag.)Hafertepe. The Material Culture of German Texans. Texas A&M University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.