APA (7th ed.) Citation

Imlay, R. W. (1968). Lower Jurassic (Pliensbachian and Toarcian) ammonites from eastern Oregon and California. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Imlay, Ralph W. Lower Jurassic (Pliensbachian and Toarcian) Ammonites from Eastern Oregon and California. Washington: U.S. Govt. Print. Off, 1968.

MLA (9th ed.) Citation

Imlay, Ralph W. Lower Jurassic (Pliensbachian and Toarcian) Ammonites from Eastern Oregon and California. U.S. Govt. Print. Off, 1968.