APA (7th ed.) Citation

Hale, M. E. (1975). A revision of the lichen genus Hypotrachyna (Parmeliaceae) in tropical America. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Hale, Mason E. A Revision of the Lichen Genus Hypotrachyna (Parmeliaceae) in Tropical America. City of Washington: Smithsonian Institution Press, 1975.

MLA (9th ed.) Citation

Hale, Mason E. A Revision of the Lichen Genus Hypotrachyna (Parmeliaceae) in Tropical America. Smithsonian Institution Press, 1975.