Cobban, W., & Kennedy, W. (1991). Some Upper Cretaceous ammonites from the Nacatoch Sand of Hempstead County, Arkansas.
Style de citation Chicago (17e éd.)Cobban, W., et W. Kennedy. Some Upper Cretaceous Ammonites from the Nacatoch Sand of Hempstead County, Arkansas. 1991.
Style de citation MLA (9e éd.)Cobban, W., et W. Kennedy. Some Upper Cretaceous Ammonites from the Nacatoch Sand of Hempstead County, Arkansas. 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.