1. Akachuku, A.E. amp J. Burley. 1979. Variation of wood anatomy of Gmelina arborea Roxb. in Nigerian pantations. IAWA Bull. 1979 /4: 94–99.
2. Arber, A. 1941a. Tercentenary of Nehemiah Grew (1614–1712). Nature 147: 630–632.
3. Arber, A. 1941b. Nehemiah Grew and Marcello Malpighi. Proc. Linn. Soc. London 153: 218238.
4. Armstrong, J.E. amp D.T. Funk. 1980. Genetic variation in the wood of Fraxinus americana. Wood and Fiber 12: 112–120.
5. Baas, P. 1969. Comparative anatomy of Platanus kerrii Gagnep. Bot. J. Linn. Soc. 62: 413–421.