1. Belsky, J. M. 1984. Stratification Among Migrant Hillside Farmers and Some Implications for Agroforestry Programs: A Case Study in Leyte, Philippines. Unpub. M.S. Thesis, Cornell Univ., Ithaca, NY.
2. —, and S. F. Siebert. 1983. Household responses to drought in two subsistence Leyte villages. Philipp. Quart. Cult. Soc. 11: 237–256.
3. Brown, W. H. 1920. Minor Products of Philippine Forests. Vol. I–III. Bull. No. 22, Bureau of Forestry, Manila, Philippines.
4. Burkill, I. H. 1966. A Dictionary of the Economic Products of the Malay Peninsula. 2 vol. Govt. Malaysia and Singapore, Kuala Lumpur, Malaysia.
5. Cobban, J. L. 1968. The Traditional Use of the Forest in Mainland Southeast Asia. Southeast Asia Series No. 5, Center Int. Studies, Ohio Univ., Athens, OH.