APA (7th ed.) Citation

International Conference on Sustainable Tourism Bologna, Italy, Brebbia, C. A., & Pineda, F. D. (2006). Sustainable tourism II. WIT.

Chicago Style (17th ed.) Citation

International Conference on Sustainable Tourism Bologna, Italy, C. A. Brebbia, and F. D. Pineda. Sustainable Tourism II. Southampton: WIT, 2006.

MLA (9th ed.) Citation

International Conference on Sustainable Tourism Bologna, Italy, et al. Sustainable Tourism II. WIT, 2006.