Liivrand, E. (1991). Biostratigraphy of the Pleistocene deposits in Estonia and correlations in the Baltic region. Stockholm University, Dept. of Quaternary Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Liivrand, Elsbet. Biostratigraphy of the Pleistocene Deposits in Estonia and Correlations in the Baltic Region. Stockholm: Stockholm University, Dept. of Quaternary Research, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Liivrand, Elsbet. Biostratigraphy of the Pleistocene Deposits in Estonia and Correlations in the Baltic Region. Stockholm University, Dept. of Quaternary Research, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.