Holmgren, P. K., & Holmgren, N. H. (1992). Plant specialists index: Index to specialists in the systematics of plants and fungi, based on data from Index Herbariorum (Herbaria), edition 8. Koeltz Scientific Books.
Chicago-Zitierstil (17. Ausg.)Holmgren, Patricia K., und Noel H. Holmgren. Plant Specialists Index: Index to Specialists in the Systematics of Plants and Fungi, Based on Data from Index Herbariorum (Herbaria), Edition 8. Königstein: Koeltz Scientific Books, 1992.
MLA-Zitierstil (9. Ausg.)Holmgren, Patricia K., und Noel H. Holmgren. Plant Specialists Index: Index to Specialists in the Systematics of Plants and Fungi, Based on Data from Index Herbariorum (Herbaria), Edition 8. Koeltz Scientific Books, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.