Cobban, W., & Kennedy, W. (1990). Variation and ontogeny of Calycoceras (Proeucalycoceras) canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States.
Cita Chicago (17th ed.)Cobban, W., i W. Kennedy. Variation and Ontogeny of Calycoceras (Proeucalycoceras) Canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States. 1990.
Cita MLA (9th ed.)Cobban, W., i W. Kennedy. Variation and Ontogeny of Calycoceras (Proeucalycoceras) Canitaurinum (Haas, 1949) from the Upper Cretaceous (Cenomanian) of the Western Interior of the United States. 1990.
Atenció: Aquestes cites poden no estar 100% correctes.