Peck, R. E. (1957). North American mesozoic charophyta. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationPeck, Raymond Elliot. North American Mesozoic Charophyta. Washington: United States Department of the Interior, Geological Survey, 1957.
MLA (9th ed.) CitationPeck, Raymond Elliot. North American Mesozoic Charophyta. United States Department of the Interior, Geological Survey, 1957.
Warning: These citations may not always be 100% accurate.