Imlay, R. W. (1976). Middle Jurassic (Bajocian and Bathonian) ammonites from northern Alaska: An ammonite succession nearly identical with that in northern Canada is correlated with a more varied ammonite succession in southern Alaska. United States Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Imlay, Ralph Willard. Middle Jurassic (Bajocian and Bathonian) Ammonites from Northern Alaska: An Ammonite Succession Nearly Identical with That in Northern Canada Is Correlated with a More Varied Ammonite Succession in Southern Alaska. Washington, DC: United States Gov. Print. Off, 1976.
MLA-Zitierstil (9. Ausg.)Imlay, Ralph Willard. Middle Jurassic (Bajocian and Bathonian) Ammonites from Northern Alaska: An Ammonite Succession Nearly Identical with That in Northern Canada Is Correlated with a More Varied Ammonite Succession in Southern Alaska. United States Gov. Print. Off, 1976.