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শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিInternational Workshop on Symmetry and Perturbation Theory Cala Gonone, Italy, Inc ebrary, এবং Giuseppe Gaeta. Symmetry and Perturbation Theory: Proceedings of the International Conference SPT 2004, Cala Gonone, Sardinia, Italy, 30 May - 6 June 2004. Hackensack, N.J.: World Scientific, 2005.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিInternational Workshop on Symmetry and Perturbation Theory Cala Gonone, Italy, et al. Symmetry and Perturbation Theory: Proceedings of the International Conference SPT 2004, Cala Gonone, Sardinia, Italy, 30 May - 6 June 2004. World Scientific, 2005.