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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cobban, W., و W. Kennedy. Upper Cretaceous Ammonites from the Coon Creek Tongue of the Ripley Formation at Its Type Locality in McNairy County, Tennessee. 1994.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Cobban, W., و W. Kennedy. Upper Cretaceous Ammonites from the Coon Creek Tongue of the Ripley Formation at Its Type Locality in McNairy County, Tennessee. 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.