Neagu, T. (1970). Micropaleontological and stratigraphical study of the Upper Cretaceous deposits between the upper valleys of the Buzău and Rîul Negru rivers (Eastern Carpathians). Institut géologique.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Neagu, Theodor. Micropaleontological and Stratigraphical Study of the Upper Cretaceous Deposits Between the Upper Valleys of the Buzău and Rîul Negru Rivers (Eastern Carpathians). Bucarest: Institut géologique, 1970.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Neagu, Theodor. Micropaleontological and Stratigraphical Study of the Upper Cretaceous Deposits Between the Upper Valleys of the Buzău and Rîul Negru Rivers (Eastern Carpathians). Institut géologique, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.