Citazione Stile APA (7a Edizione)

Sprinkle, J. (1982). Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. University of Kansas Paleontological Institute.

Citazione stile Chigago Style (17a edizione)

Sprinkle, James. Echinoderm Faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. Lawrence, Kan.: University of Kansas Paleontological Institute, 1982.

Citatione MLA (8a ed.)

Sprinkle, James. Echinoderm Faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. University of Kansas Paleontological Institute, 1982.