- Baltazar, C., and N. P. Salazar. 1979. Philippine insects: An introduction [Scolytidae, p 86]. U. P. Science Education Center, University of the Philippines, Quezon City 138 p. pp..
- Baltazar, C. R., and N. P. Salazar. 1979. Philippine insects: an introduction [Scolytidae, p. 86]. U. P. Science Education Center, University of the Philippines, Quezon City. 138 p.