Sprinkle, J. (1982). Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. University of Kansas Paleontological Institute.
Citace podle Chicago (17th ed.)Sprinkle, James. Echinoderm Faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. Lawrence, Kan.: University of Kansas Paleontological Institute, 1982.
Citace podle MLA (8th ed.)Sprinkle, James. Echinoderm Faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. University of Kansas Paleontological Institute, 1982.
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