Citations: Anonym 1911: [Snellen, P. C. T.] Iris Dresden. Deutsche Entomologische Zeitschrift Iris, herausgegeben von der Gesellschaft Iris Dresden in Verbindung mit der Deutschen Entomologischen Gesellschaft zu Berlin. - Dresden., Dresden 25, B15 10007, pp. 125
Anonym 1911: [Snellen, P. C. T.] The Entomologist's Monthly Magazine, Third Series, London 47, B15 10006, pp. 144
Huijbregts, H. 1999: [Snellen, P. C. T.] Everts, Info, Suppl. 43 (50), Sep. DEI
Kuhnt, R. 1911: [Snellen, P. C. T.] Dtsch. ent. Ztschr., pp. 491
Lambillion, J. L. 1911: [Snellen, P. C. T.] Revue mensuelle de la Société Entomologique namuroise, Namur 11, B15: 10 197, pp. 34-35
Morice, F. D. 1911: [Snellen, P. C. T.] (The) Transactions of the Entomological Society of London for the Year ..., London, B15: 10001, pp. CXXI
Piepers, M. C. 1912: [Snellen, P. C. T.] Tijdschrift voor Entomologie, S'Gravenhage 55, B15 10146, pp. 1-8, Portr.
Wheeler, G. 1911: [Snellen, P. C. T.] The Entomologist's Record and Journal of Variation, London 23, B15 10005, pp. 232