University of Pennsylvania. Botanical Laboratory. (1892). Contributions from the Botanical Laboratory. University of Pennsylvania Press.
Lua i Stíl Chicago (17ú heag.)University of Pennsylvania. Botanical Laboratory. Contributions from the Botanical Laboratory. Philadelphia: University of Pennsylvania Press, 1892.
Lua MLA (8ú heag.)University of Pennsylvania. Botanical Laboratory. Contributions from the Botanical Laboratory. University of Pennsylvania Press, 1892.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.