Não informado. (1980). Systematic botany monographs. American Society of Plant Taxonomists.
Lua i Stíl Chicago (17ú heag.)Não informado. Systematic Botany Monographs. Ann Arbor, Mich: American Society of Plant Taxonomists, 1980.
Lua MLA (8ú heag.)Não informado. Systematic Botany Monographs. American Society of Plant Taxonomists, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.