Verschuuren, B., R. Wild, J.A. McNeeley, G. Oviedo (2010). Sacred Natural Sites. Conserving Nature and Culture. London: Earthscan; Verschuuren, B. (2016). Re-awakening the power of place. Ancient philosophy and practice with relevance for protected areas and conservation in Asia. In: Verschuuren, B. and N. Furuta (2016). Asian Sacred Natural Sites. Philosophy and practice in in protected areas and conservation. Oxon: Routledge, pp. 1-14; Snodgrass and Tiedje, op.cit. Zie ook: https://web.archive.org/web/20161012142712/http://cmsdata.iucn.org/downloads/pa_guidelines_016_sacred_natural_sites.pdf d.d. 13-3-2017