Liu, Houping; Skinner, Margaret; Parker, Bruce L. & Day, W. H. (May 2003). "Recognizing Tarnished Plant Bug Damage"(PDF). University of Vermont Entomology Laboratory. Archived(PDF) from the original on 23 January 2014.
Liu, Houping; Skinner, Margaret; Parker, Bruce L. & Day, W. H. (May 2003). "Recognizing Tarnished Plant Bug Damage"(PDF). University of Vermont Entomology Laboratory. Archived(PDF) from the original on 23 January 2014.