Anna M. Gade, Professor of Environmental Studies, University of Wisconsin, Madison, United States.
Zainal Abidin Bagir, Graduate School, Universitas Gadjah Mada; Indonesian Consortium for Religious Studies, Yogyakarta, Indonesia.
Michael S. Northcott is Emeritus Professor, Faculty of Divinity, University of Edinburgh, United Kingdom.
Frans Wijsen, Professor of empirical and practical religious studies, Radboud University, The Netherlands.