- http://www.hoibees.org
- http://www.illinoisqueeninitiative.com
- honeybeehealthcoalition.org
- https://beecare.bayer.com/media-center/news/detail/a-new-way-of-protecting-bees-against-varroa-mites
- http://www.dummies.com/home-garden/hobby-farming/beekeeping/how-to-control-a-varroa-mite-problem-in-your-beehive/
- http://caes2.caes.uga.edu/bees/disorders/honey-bee-parasites.html