Trumble, J.T., Grafton-Cardwell, E.E., & Brewer, M.J. 1995 Spatial dispersion and binomial sequential sampling for citricola scale (Homoptera: Coccidae) on citrus.. Journal of Economic Entomology 88: 897-902.

Notes: Sampling was an attempt to serve as an efficient and statistically accurate method to assess population changes of Coccus pseudomagnoliarum on orange trees in the San Joaquin Valley of California.