Iowa State College. Agricultural Extension Dept. (1910). Extension bulletin. The Dept..
Lua i Stíl Chicago (17ú heag.)Iowa State College. Agricultural Extension Dept. Extension Bulletin. Ames, Iowa: The Dept., 1910.
Lua MLA (8ú heag.)Iowa State College. Agricultural Extension Dept. Extension Bulletin. The Dept., 1910.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.