- Franqui, R. A., S. Medina Gaud, and F. Gallardo Covas. 1991. Xylosandrus compactus (Eichhoff), Coleoptera: Scolytidae, the black twig borrer attacking coffee in Puerto Rico. The Journal of Agriculture of the University of Puerto Rico 75183-184.
- Franqui, R., S. Medina-Gaud, and F. Gallardo-Covas. 1991. Xylosandrus compactas (Eichhoff). Coleoptera: Scolytidae. the black twig borer attacking coffee in Puerto Rico. The Journal of Agriculture of the University of Puerto Rico 75:183-184.