APA (7th ed.) Citation

Imlay, R. W. (1960). Ammonites of early cretaceous age (Valanginian and Hauterivian) from the Pacific coast states. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Imlay, Ralph W. Ammonites of Early Cretaceous Age (Valanginian and Hauterivian) from the Pacific Coast States. Washington: United States Department of the Interior, Geological Survey, 1960.

MLA (9th ed.) Citation

Imlay, Ralph W. Ammonites of Early Cretaceous Age (Valanginian and Hauterivian) from the Pacific Coast States. United States Department of the Interior, Geological Survey, 1960.