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 Style (17th ed.) CitationHolmgren, Patricia K., and 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 (9th ed.) CitationHolmgren, Patricia K., and 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.
Warning: These citations may not always be 100% accurate.