Hohmeyer, O., Ottinger, R. L., & Rennings, K. (1997). Social costs and sustainability: Valuation and implementation in the energy and transport sector : proceedings of an international conference, held at Ladenburg, Germany, May 27-30, 1995. Springer-Verlag.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hohmeyer, Olav, Richard L. Ottinger, و Klaus Rennings. Social Costs and Sustainability: Valuation and Implementation in the Energy and Transport Sector : Proceedings of an International Conference, Held at Ladenburg, Germany, May 27-30, 1995. New York: Springer-Verlag, 1997.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Hohmeyer, Olav, et al. Social Costs and Sustainability: Valuation and Implementation in the Energy and Transport Sector : Proceedings of an International Conference, Held at Ladenburg, Germany, May 27-30, 1995. Springer-Verlag, 1997.