Winslow, M. R. (1962). Plant spores and other microfossils from upper Devonian and lower Mississippian rocks of Ohio: Stratigraphic occurrence, systematic classification, and illustration of plant microfossils. U.S. Government Print. Office.
Chicago-Zitierstil (17. Ausg.)Winslow, Marcia R. Plant Spores and Other Microfossils from Upper Devonian and Lower Mississippian Rocks of Ohio: Stratigraphic Occurrence, Systematic Classification, and Illustration of Plant Microfossils. Washington, DC: U.S. Government Print. Office, 1962.
MLA-Zitierstil (9. Ausg.)Winslow, Marcia R. Plant Spores and Other Microfossils from Upper Devonian and Lower Mississippian Rocks of Ohio: Stratigraphic Occurrence, Systematic Classification, and Illustration of Plant Microfossils. U.S. Government Print. Office, 1962.