Reuther, Walter; Batchelor, Leon Dexter; Webber, Herbert John (January 1967). "Horticultural Varieties of CitrusLưu trữ 2008-03-08 tại Wayback Machine". Citrus Industry: Crop Protection. Volume I: History, World Distribution, Botany, and Varieties (Rev. ed.). University of California. ISBN 0-931876-24-9
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Reuther, Walter; Batchelor, Leon Dexter; Webber, Herbert John (January 1967). "Horticultural Varieties of CitrusLưu trữ 2008-03-08 tại Wayback Machine". Citrus Industry: Crop Protection. Volume I: History, World Distribution, Botany, and Varieties (Rev. ed.). University of California. ISBN 0-931876-24-9