1. Carlquist, S. 1965. Comparative plant anatomy. New York: Holt, Rinehart, and Winston.
2. Côté, W. A., Day, A. C. 1962. Vestured pits—fine structure and apparent relationship with warts. Tappi 45: 906–910.
3. Côté, W. A., Day, A. C. 1969. Wood ultrastructure of the southern yellow pines. SUNY College of Forestry Technical Publication, No. 95, Syracuse, New York.
4. Côté, W. A., Koran, Z., Day, A. C. 1964. Replica techniques for electron microscopy of wood and paper. Tappi 47 (8): 477–484.
5. Cronshaw, J. 1965. The formation of the wart structure in tracheids of Pinus radiata. Protoplasma 60: 233–242.