Citrus Varieties of the World - Second Edition, 2000, Hardcover, 160 pp, colour.
Contains information on 235 individual citrus varieties, including sweet oranges, mandarins, grapefruit, pummelos, lemons, limes, citrons, kumquats and limequats. Details of 55 new or increasingly important varieties have been added to the 180 featured in the first edition.
page updated 28th May 2009 & 19th December 2021
I have obtained a limited supply of the second edition of this highly recommended but hard-to-find book.
Covers citrus fruit varieties and rootstocks, with many excellent colour photographs.
................An Illustrated Guide by James Saunt
Sorry, no longer available from me.
Try online secondhand book sellers.