HAJIME, E.: New Business Opportunities in the Growing E-Tourism Industry. IGI Global, 2015, 396 s. ISBN 1466685786
PESONEN, J., NEIDHARDT, J.: Information and Communication Technologies in Tourism 2019: Proceedings of the International Conference in Nicosia, Cyprus, January 30–February 1, 2019. Springer, 2018, 462 s. ISBN 3030059405