International Workshop on Symmetry and Perturbation Theory Cala Gonone, Italy, ebrary, Inc, & Gaeta, G. (2005). Symmetry and perturbation theory: Proceedings of the international conference SPT 2004, Cala Gonone, Sardinia, Italy, 30 May - 6 June 2004. World Scientific.
Chicago-viite (17. p.)International Workshop on Symmetry and Perturbation Theory Cala Gonone, Italy, Inc ebrary, ja 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.
MLA-viite (9. p.)International 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.