A Simple User's Guide to Certification for Sustainable Tourism and Ecotourism (in English and Spanish) -- this guide to certification, developed in collaboration with the International Ecotourism Society (TIES), is designed for those who have heard about certifying sustainable tourism and want to understand how it works or how to begin the process.

Practical Steps for Funding Certification of Tourism Businesses (in English and Spanish) -- this handbook, developed in collaboration with the International Ecotourism Society (TIES) is intended to provide those tourism businesses seeking certification, particularly small businesses, an overview of funding mechanisms and possible sources to help underwrite the costs of undertaking sustainable tourism certification.

Practical Steps for Marketing Tourism Certification (in English and Spanish) -- these marketing reports, developed in collaboration with the Center for Ecotourism and Sustainable Development and the International Ecotourism Society, focus on how to build consumer and industry buy-in for certification. The handbook is primarily aimed for use by certification programs; however, businesses, governments, NGOs, trade associations, etc. will also find this guide useful.

Financing Tourism Certification Programs (in English and Spanish) -- achieving financial stability has been a central challenge for many 'green' certification programs, in tourism as well as in other industries. In this handbook, the Center for Ecotourism and Sustainable Development and the International Ecotourism Society outline steps and offers recommendations for making tourism certification programs financially viable.

Implementing Monitoring and Evaluation Systems for Impact: A Guide for Tourism Certifiers and Their Clients (in English and Spanish) -- explains how to develop and utilize a successful M&E system.