Chicago

Kohler, G. R., K. F Wallin, and D. W Ross. 2016. Seasonal Phenology and Abundance of Leucopis Argenticollis, Leucopis Piniperda (diptera: Chamaemyiidae), Laricobius Nigrinus (coleoptera: Deridontidae) and Adelges Tsugae (hemiptera: Adelgidae) In the Pacific Northwest Usa. : Cambridge University Press.