McKercher, B., Cros, H. d., & McKercher, R. (2002). Cultural tourism: the partnership between tourism and cultural heritage management: Haworth Hospitality Press.
Also, if you are interested in the area of world heritage site image, my recent articles might be good references.
Cheng, M., Wong, I. A., & Liu, M. T. (2013). A Cross-Cultural Comparison of World Heritage Site Image: The Case of Hue. Tourism Analysis, 18(6), 707-712.
Wong, I. A., & Cheng, M. (2014). Exploring the Effects of Heritage Site Image on Souvenir Shopping Attitudes: The Moderating Role of Perceived Cultural Difference. Journal of Travel & Tourism Marketing, 31(04), 476-492. doi: 10.1080/10548408.2014.883351
Rossler, M. (2003) "World Heritage Sites: Toward Linking the Tangible and the Intangible", in Harmon, D. and Putney, A. (eds.) The Full Value of Parks: From Economics to the Intangible.Landham: Rowman & Littlefield, pp. 197-210.
Leask, A. and Fyall, A. (2006) (eds.) Managing World Heritage Sites. Amsterdam: Elsevier.
Thre are many ideas and viewpoints of the field in this book:
Lia Bassa (ed.) (2010): Studies in Heritage Management 1. Foundation for Information Society,, Budapest. ISBN: 978-963-87788-7-1
and a paper from a regional research
Kiss, F. – Török. M.: How the online presentations of the heritage elements meet the online touristic needs in the Balkan. Sharing Cultures 2015, 4th International Conference on Intangible Heritage, Lagos, Portugal, 21-23 September, 2015. In: Sérgio Líra, Rogério Almoeda and Cristina Pinheiro (eds.): Proceedings of Sharing Cultures 2015, 4th International Conference on Intangible Heritage, Green Lines Institute Barcelos, Portugal, 2015, pp 269-277. (ISBN: 978-989-8734-08-2, eISBN: 978-989-8734-12-9)