Franqui, R.A. et al. 1991. XYLOSANDRUS COMPACTUS (EICHOFF), COLEOPTERA: SCOLYTIDAE, THE BLACK TWIG BORER ATTACKING COFFEE IN PUERTO RICO. The Journal of Agriculture of the University of Puerto Rico. 75, 2 (Apr. 1991), 183–184. DOI:https://doi.org/10.46429/jaupr.v75i2.3582.