Não informado. (2021). Illinois Bulletin. University of Illinois at Urbana-Champaign, Agricultural Experiment Station.
Lua i Stíl Chicago (17ú heag.)Não informado. Illinois Bulletin. Urbana, Ill: University of Illinois at Urbana-Champaign, Agricultural Experiment Station, 2021.
Lua MLA (8ú heag.)Não informado. Illinois Bulletin. University of Illinois at Urbana-Champaign, Agricultural Experiment Station, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.