Zangerl, R., & Case, G. R. (1973). Iniopterygia, a new order of chondrichthyan fishes from the Pennsylvanian of North America. Field Museum of Natural History.
Chicago Style (17th ed.) CitationZangerl, Rainer, and Gerard R. Case. Iniopterygia, a New Order of Chondrichthyan Fishes from the Pennsylvanian of North America. Chicago, Ill: Field Museum of Natural History, 1973.
MLA (9th ed.) CitationZangerl, Rainer, and Gerard R. Case. Iniopterygia, a New Order of Chondrichthyan Fishes from the Pennsylvanian of North America. Field Museum of Natural History, 1973.
Warning: These citations may not always be 100% accurate.