1. Fischer, C. E. C., in Flora of the Presidency of Madras, Part IX (edit. by Gamble, J. S.) (Adlard and Son, London, 1931).
2. Sakdisuwan, S., thesis, Chulalongkorn Univ., Bangkok (1967).
3. Vacharabhaya, M., thesis, Chulalongkorn Univ., Bangkok (1969).
4. Composition of Foods, Agricultural Handbook No. 8 (United States Department of Agriculture, Agricultural Research Service, Washington, 1963).
5. Production Yearbook, 23 (Food and Agriculture Organization, Rome, 1969).