Gilbert, P. 2007: A Source Book for Biographical Literature on Entomologists Leiden, Backhuys Publishers, 694 S., A 2972, pp. 64
Warnert, J. 2009: The 50th anniversary of a great idea. Landmark Hilgardia artikel on 'integrated control' considered 'most important' pest control paper of 20th century. California Agriculture 63 (4), S. 160-161, B15: 12319