- Florida Citrus Budwood Protection Program
- Florida Citrus Nurserymen’s Association
- Southwest Florida Research and Education Center SWFREC
- University of Florida Citrus Research and Education Center CREC
- Texas A&M University Kingsville Citrus Center—Weslaco, Texas
- Texas Citrus and Subtropical Fruits
- Australian Citrus Propagation Association
- Australian Citrus Industry Information for Commercial Growers
- Citrus in Western Australia
- South Africa Citrus Research International CRI
- French National Institute of Agricultural Citrus Research
6.4—Citrus Resource Information
Foreign Citrus Research Info
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