UCR Digital Subtropical Horticulture Collection


 Butterfield, H., A History of Subtropical Fruits and Nuts in California.Berkeley: University of California, Agricultural Experiment Station, 1963.
The Citrus Industry Rev. Ed. (Volumes 1 and 2)
Condit, Ira J., A. N. Benemerito, and Wang Hao Chen Citrus Fruits and their Culture in Kwangtung Province, South China