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2. The comparative stem and root anatomy of Goniothalamus andersonii, G. macrophyllus, G. malayanus and G. velutinus (Annonaceae) from the peat swamps of Sarawak;Blunden;Bot. J. Linn. Soc.,1974
3. Beiträge zur Anatomie der Simarubaceenrinden;Casparis;Diss. Phil. Fak.,1918
4. Anatomy of common North American American pulpwood barks;Chang;TAPPI Monographs Series No 14,1954
5. Root identification manual of trees and shrubs;Cutler,1987