APA (7th ed.) Citation

Imlay, R. W. (1982). Jurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States: Marine waters invaded Montana in late Callovian time, advanced southward across Wyoming in early Oxfordian time and persisted in Montana during late Oxfordian time. United States Gov. Print. Off.

Chicago Style (17th ed.) Citation

Imlay, Ralph Willard. Jurassic (Oxfordian and Late Callovian) Ammonites from the Western Interior Region of the United States: Marine Waters Invaded Montana in Late Callovian Time, Advanced Southward Across Wyoming in Early Oxfordian Time and Persisted in Montana During Late Oxfordian Time. Washington: United States Gov. Print. Off, 1982.

MLA (9th ed.) Citation

Imlay, Ralph Willard. Jurassic (Oxfordian and Late Callovian) Ammonites from the Western Interior Region of the United States: Marine Waters Invaded Montana in Late Callovian Time, Advanced Southward Across Wyoming in Early Oxfordian Time and Persisted in Montana During Late Oxfordian Time. United States Gov. Print. Off, 1982.