Não informado. (1971). Abstracta botanica. L. Eotvos University, Department of Plant Taxonomy and Ecology.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Abstracta Botanica. Budapest: L. Eotvos University, Department of Plant Taxonomy and Ecology, 1971.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Abstracta Botanica. L. Eotvos University, Department of Plant Taxonomy and Ecology, 1971.
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