Zettler, L. W., Zettler, J. A., Richardson, L. W., Ray, H. A., McCormick, J. P., Stice, A. L., & Stocks, I. (2013). Pestiferous scale insects on native epiphytic orchids in south Florida: A new threat posed by exotic species. Universidad de Costa Rica.

Zettler, Lawawrence W., Jennifer A. Zettler, Larry W. Richardson, Haleigh A. Ray, John P. McCormick, Andrew L. Stice, and Ian Stocks. Pestiferous Scale Insects On Native Epiphytic Orchids in South Florida: A New Threat Posed By Exotic Species. Universidad de Costa Rica, 2013.

Zettler, Lawawrence W., et al. Pestiferous Scale Insects On Native Epiphytic Orchids in South Florida: A New Threat Posed By Exotic Species. Universidad de Costa Rica, 2013.