APA (7th ed.) Citation

International Association for Plant Taxonomy, Holmgren, P. K., Holmgren, N. H., & Barnett, L. C. (1990). Index herbariorum: A guide to the location and contents of the world's public herbaria (Eighth edition.). Published and Distributed for International Association for Plant Taxonomy by New York Botanical Gardens.

Chicago Style (17th ed.) Citation

International Association for Plant Taxonomy, Patricia K. Holmgren, Noel H. Holmgren, and Lisa C. Barnett. Index Herbariorum: A Guide to the Location and Contents of the World's Public Herbaria. Eighth edition. Bronx, N.Y.: Published and Distributed for International Association for Plant Taxonomy by New York Botanical Gardens, 1990.

MLA (9th ed.) Citation

International Association for Plant Taxonomy, et al. Index Herbariorum: A Guide to the Location and Contents of the World's Public Herbaria. Eighth edition. Published and Distributed for International Association for Plant Taxonomy by New York Botanical Gardens, 1990.