Παραπομπή σε μορφή APA (7η εκδ.)

Cobban, W., & Kennedy, W. (1994). Upper Cretaceous ammonites from the Coon Creek Tongue of the Ripley Formation at its type locality in McNairy County, Tennessee.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cobban, W., και W. Kennedy. Upper Cretaceous Ammonites from the Coon Creek Tongue of the Ripley Formation at Its Type Locality in McNairy County, Tennessee. 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cobban, W., και W. Kennedy. Upper Cretaceous Ammonites from the Coon Creek Tongue of the Ripley Formation at Its Type Locality in McNairy County, Tennessee. 1994.