International Conference on Information and Communication Technologies in Tourism Helsinki, Finland, Frew, A. J., Hitz, M., & O'Connor, P. (2003). Information and communication technologies in tourism 2003: Proceedings of the international conference in Helsinki, Finland, 2003. Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Conference on Information and Communication Technologies in Tourism Helsinki, Finland, Andrew J. Frew, Martin Hitz, και Peter O'Connor. Information and Communication Technologies in Tourism 2003: Proceedings of the International Conference in Helsinki, Finland, 2003. Wien : New York: Springer, 2003.
Παραπομπή σε μορφή MLA (9th εκδ.)International Conference on Information and Communication Technologies in Tourism Helsinki, Finland, et al. Information and Communication Technologies in Tourism 2003: Proceedings of the International Conference in Helsinki, Finland, 2003. Springer, 2003.