Jeletzky, J. A. (1968). Macro fossil zones of the marine cretaceous of the western interior of Canada and their correlation with the zones and stages of Europe and the western interior of the United States. Geological Survey of Canada.
Chicago-Zitierstil (17. Ausg.)Jeletzky, J. A. Macro Fossil Zones of the Marine Cretaceous of the Western Interior of Canada and Their Correlation with the Zones and Stages of Europe and the Western Interior of the United States. Ottawa: Geological Survey of Canada, 1968.
MLA-Zitierstil (9. Ausg.)Jeletzky, J. A. Macro Fossil Zones of the Marine Cretaceous of the Western Interior of Canada and Their Correlation with the Zones and Stages of Europe and the Western Interior of the United States. Geological Survey of Canada, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.