Teulon, D.A.J., T.J.B. Herman, and M.M. Davidson. “Monitoring Monterey Pine Aphids in Hawkes Bay Forests”. New Zealand Plant Protection 56 (August 1, 2003): 39–44. Accessed January 25, 2022. https://journal.nzpps.org/index.php/nzpp/article/view/6029.