INDEX Herbariorum; a guide to the location and contents of the world´s public herbaria. (1956). INDEX Herbariorum: A guide to the location and contents of the world´s public herbaria. International Bureau for plant Taxonomy and Nomenclature.
Cita Chicago Style (17a ed.)INDEX Herbariorum; a guide to the location and contents of the world´s public herbaria. INDEX Herbariorum: A Guide to the Location and Contents of the World´s Public Herbaria. Utrecht - HOLA: International Bureau for plant Taxonomy and Nomenclature, 1956.
Cita MLA (8a ed.)INDEX Herbariorum; a guide to the location and contents of the world´s public herbaria. INDEX Herbariorum: A Guide to the Location and Contents of the World´s Public Herbaria. International Bureau for plant Taxonomy and Nomenclature, 1956.