Não informado. (1929). Butler University botanical studies. Butler University, Department of Botany.
Lua i Stíl Chicago (17ú heag.)Não informado. Butler University Botanical Studies. Indianapolis, Ind: Butler University, Department of Botany, 1929.
Lua MLA (8ú heag.)Não informado. Butler University Botanical Studies. Butler University, Department of Botany, 1929.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.