Read, C. B. (1964). Upper Paleozoic floral zones and floral provinces of the United States. U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationRead, Charles Brian. Upper Paleozoic Floral Zones and Floral Provinces of the United States. Washington: U.S. Govt. Print. Off, 1964.
MLA (9th ed.) CitationRead, Charles Brian. Upper Paleozoic Floral Zones and Floral Provinces of the United States. U.S. Govt. Print. Off, 1964.
Warning: These citations may not always be 100% accurate.