International Geological Congress Florence, Italy, Eiswirth, M., & Howard, K. W. F. (2007). Urban groundwater-- meeting the challenge: Selected papers from the 32nd International Geological Congress (IGC), Florence, Italy, August 2004. Taylor & Francis Group.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Geological Congress Florence, Italy, Matthias Eiswirth, و Ken W. F. Howard. Urban Groundwater-- Meeting the Challenge: Selected Papers from the 32nd International Geological Congress (IGC), Florence, Italy, August 2004. London ; New York: Taylor & Francis Group, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Geological Congress Florence, Italy, et al. Urban Groundwater-- Meeting the Challenge: Selected Papers from the 32nd International Geological Congress (IGC), Florence, Italy, August 2004. Taylor & Francis Group, 2007.