1. Guidelines for Public Use Measurement and Reporting at Parks and Protected Areas;Hornback,1999
2. Guidelines for Protected Areas Legislation;Lausche,2011
3. Tourism and Visitor Management in Protected Areas: GUIDELINES for Sustainability;Leung,2018
4. Manual Sobre Conceptos de uso Público en los Espacios Naturales Protegidos,2005
5. Análisis de la demanda de uso Público en Tres Parques Naturales de Galicia;Cabalar;BAGE,2013