1. Official Rules Affecting the Florida Citrus Industry Florida Department of Citrus, Lakeland, Florida, USA, 1975.
2. United States Standards for Grades of Grapefruit Juice USDA, Washington, DC, 1968.
3. National Health Medical Research Council Approved Food Standards and Approved Food Additives Australian Government Publication Service, Canberra, ACT, 1976, pp. 127–128.