1. Agrawal, Arun and Gautum N. Yadama. 1997. How do local institutions mediate market and population pressures on resources? Forest Panchayats in Kumaon, India. Development and Change 28: 435–465.
2. Barthelmes, R., C. Busemann, E. Heusinger, C. Ochs, B. Trosowski and K. Wellershaus. 1998. Banaue—Between yesterday and tomorrow (socioeconomic conditions). In Rice terraces of Ifugao (Northern-Luzon, Philippines) Conflicts of land use and environmental conservation, ed. J. Settle, H. Plachter, J. Sauerborn and D. Vetterlein. UFZ-Bericht, Nr. 5.
3. Barton, R. F. 1919. Ifugao law. University of California Publications in Archaeology and Ethnology 15(1): 1— 186.
4. Brightman, Robert A. 1987. Conservation and resource depletion: The case of the boreal forest
5. Algonquians. In The question of the commons: The culture and ecology of communal resources,ed. Bonnie J. McCay and James M. Acheson. Tucson: University of Arizona Press.