Gabbay, D. M., Kruse, R., Nonnengart, A., & Ohlbach, H. J. Qualitative and quantitative practical reasoning: First International Joint Conference on Qualitative and Quantitative Practical Reasoning, ECSQARU-FAPR'97, Bad Honnef, Germany, June 9 12, 1997 : proceedings. Springer.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিGabbay, Dov M., Rudolf Kruse, Andreas Nonnengart, এবং Hans Jürgen Ohlbach. Qualitative and Quantitative Practical Reasoning: First International Joint Conference on Qualitative and Quantitative Practical Reasoning, ECSQARU-FAPR'97, Bad Honnef, Germany, June 9 12, 1997 : Proceedings. Berlin [etc.]: Springer.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিGabbay, Dov M., et al. Qualitative and Quantitative Practical Reasoning: First International Joint Conference on Qualitative and Quantitative Practical Reasoning, ECSQARU-FAPR'97, Bad Honnef, Germany, June 9 12, 1997 : Proceedings. Springer.