Anonym 1921: [Hawkshaw, J. C.] Entomological News and Proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia, Philadelphia 32, S. 192, B15 10004
Anonym 1921: [Hawkshaw, J. C.] The Entomologist's Monthly Magazine, Third Series, London 57, S. 94, B15 10006