- http://www.stewartpostharvest.com
- http://www.pma.com
- http://www.fruitlogistica.com
- http://www.agrow.com
- http://www.poscosecha.com
- http://www.madhavmohan.com
- http://www.freshplaza.com
- http://www.agrolinker.co.uk
- http://www.californiacitrusthreat.org
- http://articles.latimes.com/keyword/citrus-industry
- http://www.wapa-association.org