S. Raja, W. A. Gillani, and M. J. W. Copland, “Effect of Different Humidity Levels on the Biology of Longtailed Mealy Bug Pseudococcus longispinus (Targioni and Tozzetti) (Homoptera: Pseudococcidae): Humidity Effects on P. longispinus”, Pakistan Journal of Scientific & Industrial Research, vol. 52, no. 5, pp. 270–274, Oct. 2009.