External links

• Colorado State University Cooperative Extension. Bacillus thuringiensis. http://www.ext.colostate.edu/pubs/insect/05556.html
• PA IPM Program. Tomato hornworm. http://resources.cas.psu.edu/ipm/25pests/tomhornwm.pdf

References

• Brooklyn Botanic Garden. (1999): Natural insect control: The ecological gardener's guide to foiling pests. Handbook # 139. Brooklyn Botanic Garden, Inc. Washington Avenue, Brooklyn, NY.
• CABI. (2004): Crop protection compendium. 2004 Edition. CAB International Publishing. Wallingford, UK.
• Endersby, N.; Ridland, P. (1999): Time to start monitoring for diamondback moth in Asian Brassica vegetables. Access to Asian Vegetables, Issue No. 23 (English Edition), Institute for Horticultural Development – Knoxfield.