1.		Cultural tourism in Europe / Greg Richards, [et al.] Autor: Richards, Greg Data Publicação: 1996 Coautor: Gratton, Chris Maiztegui-Oñate, Concepción Munsters, W. Hjalager, Anne-Mette Bauer, M. Roth, P. Langemeyer, A. Kalogeropoulou, Helen O Donnchadha, G. O Connor, B. Van der Borg, J. Costa, Paolo Curado, H. de Carvalho Bertolín, M.T. Areitio Foley, M. COTA(S): 6429; 6429.a
2.		World leisure participation : free time in the global village / Grant Cushman, [et al.] Autor: Cushman, Grant Coautor: ; Veal, A.J. Zuzanek, Jiri Darcy, S. Samuel, Nicole Tokarski, Walter Michels, Harald Gratton, Chris Sivan, Atara Robertson, Bob Ruskin, Hillel Harada, Munehiko Laidler, Allan Jung, Bohdan Maiztegui-Oñate, Concepción Cordell, H.K. McDonald, B.L. Lewis, B. Miles, M. Martin, J. Bason, J. COTA(S): 6428