Palmer, Paula, Juanita Sánchez, and Gloria Mayorga. (1991) 1991. Taking Care of Sibö’s Gifts: An Environmental Treatise from Costa Rica’s KéköLdi Indigenous Reserve. San José, Costa Rica: Asociación de Desarrollo Integral de la Reserva Indígena Cocles/KéköLdi. http://www.worldcat.org/oclc/24535846.
natural conservation
Johannes, R. E. (Robert Earle). (1989) 1989. Traditional Ecological Knowledge: A Collection of Essays. IUCN Conservation Library. Gland [Switzerland]; Cambridge: IUCN. http://www.worldcat.org/oclc/729639587.
Hanks, J. (1984) 1984. “Conservation and Rural Development: Towards an Integrated Approach”. The Environmentalist 4 (Supplement 7): 60-67. doi:10.1007/BF01907295.
Adisewojo, Sasongko S., Sidik Tjokronegoro, and Rukmiati Tjokronegoro. (1984) 1984. “Natural Biological Compounds Traditionally Used As Pesticides and Medicines”. The Environmentalist 4 (Suppl 7): 11-14. doi:10.1007/BF01907285.