- Gouger, R. J., W. C. Yearian, and R. C. Wilkinson. 1975. Feeding and reproductivity behavior of Ips avulsus. Florida Entomologist 58(4)1-229.
- Wilkinson, R. C., and W. C. Yearian. 1964. Ips bark beetle attacks . Sunshine State Agricultural Research Report (Florida State) 9:16-17.
- Yearian, W. C. 1967a. Relations of the blue stain fungus, Ceratocystis ips (Rumbold) G. Moreau, to Ips bark beetles (Coleoptera: Scolytidae) occurring in Florida. Unpublished, dissertation, University of Florida, Gainesville. 81 p.
- Yearian, W. C. 1967b. Relations of the blue stain fungus Ceratoscystis ips (Rumbold) C Moereau to Ips bark beetles (Coleoptera: Scolytidae) occuring in Florida . Dissertation Abstracts 27B:3356.
- Yearian, W. C., R. J. Gouger, and R. C. Wilkinson. 1972. Effects of the blue-stain fungus, Ceratocystis ips, on the development of Ips bark beetles in pine bolts . Entomological Society of America, Annals 65:481-487.
- Yearian, W. C., and L. O. Warren. 1964. Insects of pine cones in Arkansas . Kansas Entomological Society, Journal 37:259-264.
- Yearian, W. C., and R. C. Wilkinson. 1963. An artificial rearing medium for Ips calligraphus Germ . Florida Entomologist 46:319-320.
- Yearian, W. C., and R. C. Wilkinson. 1965. Two larval rearing media for Ips bark beetles . Florida Entomologist 48:25-27.
- Yearian, W. C., and R. C. Wilkinson. 1967. Development of three Ips bark beetles on a phloem-based rearing medium . Florida Entomologist 50:43-45.