Wahlberg, Niklas, and Sören Nylin. “Reviews: Butterflies of British Columbia, Photographic Guide to the Butterflies of Britain & Europe, Butterflies of Britain and Ireland Mapped”. Entomologica Fennica 12, no. 4 (December 1, 2001): 251–253. Accessed July 18, 2024. https://journal.fi/entomolfennica/article/view/84130.