1. Lambert, J. B., Frye, J. S., and Poinar, G. O. Jr, Archaeometry26 (1974) 43.
2. Eberle, W., Hirdes, W., Muff, R., and Pelaez, M., The geology of the Cordillera Septentrional, p. 619. Proc. Ninth Caribbean Geol. Conf. Santo Domingo 1980.
3. Baroni Urbani, C., and Saunders, J. B., The Fauna of the Dominican Republic Amber: The Present Status of Knowledge, p. 213–223. Proc. Ninth Caribbean Geol. Conf. Santo Domingo 1980.
4. Lee, Y.-T., and Langenheim, J. H., Univ. Calif. Publ. Botany69 (1975) 2.
5. Langenheim, J. H., and Lee, Y.-T., Brittonia26 (1974) 3.