APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1904). Professional paper No. 40. Department of the Interior. United States Geological Survey, Charles D. Walcott, Director. The Triassic cephalopod genera of America. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Professional Paper No. 40. Department of the Interior. United States Geological Survey, Charles D. Walcott, Director. The Triassic Cephalopod Genera of America. Washington: [publisher not identified], 1904.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Professional Paper No. 40. Department of the Interior. United States Geological Survey, Charles D. Walcott, Director. The Triassic Cephalopod Genera of America. [publisher not identified], 1904.