Isabela State University. Cagayan Valley Programme on Environment and Development. (1992). Forestry for people and nature: Field research and theory on environment and development in the Cagayan Valley, Philippines. Cagayan Valley Programme on Environment and Development, Isabela State University.
Παραπομπή σε μορφή Chicago (17η εκδ.)Isabela State University. Cagayan Valley Programme on Environment and Development. Forestry for People and Nature: Field Research and Theory on Environment and Development in the Cagayan Valley, Philippines. Cabagan, Isabela: Cagayan Valley Programme on Environment and Development, Isabela State University, 1992.
Παραπομπή σε μορφή MLA (9th εκδ.)Isabela State University. Cagayan Valley Programme on Environment and Development. Forestry for People and Nature: Field Research and Theory on Environment and Development in the Cagayan Valley, Philippines. Cagayan Valley Programme on Environment and Development, Isabela State University, 1992.