Ystad Project, Berglund, B. E., Larsson, L., Lewan, N., Riddersporre, M., & Skansjo, S. (1991). The cultural landscape during 6000 years in southern Sweden: The Ystad Project. Munksgaard International Booksellers and Publishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ystad Project, Bjorn E. Berglund, Lars Larsson, Nils Lewan, Mats Riddersporre, و Sten Skansjo. The Cultural Landscape During 6000 Years in Southern Sweden: The Ystad Project. Copenhagen: Munksgaard International Booksellers and Publishers, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ystad Project, et al. The Cultural Landscape During 6000 Years in Southern Sweden: The Ystad Project. Munksgaard International Booksellers and Publishers, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.