Williston, S., & Farrington, O. C. (1903). On the osteology of nyctosaurus (nyctodactylus) with notes on american pterosaurs. Chicago: [s.n].
Chicago Style CitationWilliston, Samuel, and Oliver Cummings Farrington. On the Osteology of Nyctosaurus (nyctodactylus) With Notes On American Pterosaurs. Chicago: [s.n], 1903.
MLA CitationWilliston, Samuel, and Oliver Cummings Farrington. On the Osteology of Nyctosaurus (nyctodactylus) With Notes On American Pterosaurs. Chicago: [s.n], 1903.
Warning: These citations may not always be 100% accurate.