APA (7th ed.) Citation

Imlay, R. W. Callovian (Jurassic) ammonites from the United States and Alaska: Descriptions and illustrations of cephalopods of late Jurassic age. U.S. Government Print. Office.

Chicago Style (17th ed.) Citation

Imlay, Ralph W. Callovian (Jurassic) Ammonites from the United States and Alaska: Descriptions and Illustrations of Cephalopods of Late Jurassic Age. Washington, DC: U.S. Government Print. Office.

MLA (9th ed.) Citation

Imlay, Ralph W. Callovian (Jurassic) Ammonites from the United States and Alaska: Descriptions and Illustrations of Cephalopods of Late Jurassic Age. U.S. Government Print. Office.