1. Tourism as a sacred journey;Allcock;Loisir et Société,1988
2. Spiritual but not religious? Beyond binary choices in the study of religion;Ammerman;Journal for the Scientific Study of Religion,2013
3. Antoine de Saint-Exupéry (2003 [1943]). The little prince. The bomoo.com, Ebook of English Series, The American edition's Cover. Retrieved on November 15, 2017, from http://www.yoanaj.co.il/uploadimages/The_Little_Prince.pdf.
4. Towards an understanding and definition of wilderness spirituality;Ashley;Australian Geographer,2007
5. Spirituality at work. A conceptualization and measure;Ashmos;Journal of Management Inquiry,2000