Hale, M. E. (1961). Lichen handbook: A guide to the lichens of eastern North America. Washington, D.C.: Smithsonian Institution.
Chicago Style CitationHale, Mason E. Lichen Handbook: A Guide to the Lichens of Eastern North America. Washington, D.C.: Smithsonian Institution, 1961.
MLA CitationHale, Mason E. Lichen Handbook: A Guide to the Lichens of Eastern North America. Washington, D.C.: Smithsonian Institution, 1961.
Warning: These citations may not always be 100% accurate.