The Citrus Industry is a book consisting of five volumes of scientific and experimental information on all the citrus species and varieties, originals as well as hybrids.

The book was produced by scientists associated with the University of California Citrus Experiment Station, and contains fundamental information on the variety description and cost effectiveness of growing, as well technical support for citrus cultivation. The name reflects its aim to support the success of the citrus industry in all means. It is considered the Bible of citrus farming.

The book was originally published between the years 1943-1948, which is its first edition. It was revised in the 1960s by Walter Reuther with major reconstruction, and republished starting in 1976-1989. The Second Edition is much updated, but some interesting material was removed.

Many of the mentioned are classical abbreviation authors, and the citations of their names are actually referring to this book.