Citations: Howard, L. O. 1930: History of applied Entomology (Somewhat Anecdotal). Smithsonian Miscellaneous Collections, Washington 84, S. X+1-564, B15: 1018, pp. (Taf. 25)
Natvig, L. R. 1943: [Schoyen, W. M.] Norsk entomologisk Tidsskrift, Oslo 7 (1/2), B15 10458, pp. 32-42, Portr. + Schr.verz.
Osborn, H. 1952: A Brief History of Entomology Including Time of Demosthenes and Aristotle to Modern Times with over Five Hundred Portraits. Columbus, Ohio, The Spahr & Glenn Company, 1-303 S., B15: 6024a, pp. 224
Sømme, L. S. 2004: Trekk fra entomologiens historie i Norge. Insekt-Nytt. Medlemsblad for Norsk Entomologisk Forening, Oslo 29 (1/2), S. 9-16, B15 12383, pp. 13-14, Portr.