Não informado. (1971). Abstracta botanica. L. Eotvos University, Department of Plant Taxonomy and Ecology.
Chicago-referens (17:e uppl.)Não informado. Abstracta Botanica. Budapest: L. Eotvos University, Department of Plant Taxonomy and Ecology, 1971.
MLA-referens (8:e uppl.)Não informado. Abstracta Botanica. L. Eotvos University, Department of Plant Taxonomy and Ecology, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.