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R. Wittig. Experimental research on recolonisation with Anemone nemorosa of the beech forests of the Ruhr district (Germany) floristically impoverished by air pollution.. „Environ Sci Pollut Res Int”. 15 (6), s. 492-8, Sep 2008. DOI: 10.1007/s11356-008-0026-z. PMID: 18622635.
Michael A.M.A.RuggieroMichael A.M.A. i inni, A Higher Level Classification of All Living Organisms, „PLOS One”, 10 (4), 2015, art. nr e0119248, DOI: 10.1371/journal.pone.0119248, PMID: 25923521, PMCID: PMC4418965 [dostęp 2021-03-26](ang.).
R. Wittig. Experimental research on recolonisation with Anemone nemorosa of the beech forests of the Ruhr district (Germany) floristically impoverished by air pollution.. „Environ Sci Pollut Res Int”. 15 (6), s. 492-8, Sep 2008. DOI: 10.1007/s11356-008-0026-z. PMID: 18622635.
George Motherby: A new medical dictionary (wersja cyfrowa). London: oryg. "printed for J. Johnson", wersja cyfrowa - National Library of Australia, 1775. Brak numerów stron w książce