Não informado. (1987). Miscellaneous Publications of the University of Utrecht Herbarium. University of Utrecht, Institute of Systematic Botany.
Chicago-viite (17. p.)Não informado. Miscellaneous Publications of the University of Utrecht Herbarium. Utrecht, Holanda: University of Utrecht, Institute of Systematic Botany, 1987.
MLA-viite (8. p.)Não informado. Miscellaneous Publications of the University of Utrecht Herbarium. University of Utrecht, Institute of Systematic Botany, 1987.
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