South Carolina, State of (1984), S.C. Code of Laws, SECTION 1-1-690. Official State beverage., <http://www.scstatehouse.net/code/t01c001.htmArchiválva2007. június 30-i dátummal a Wayback Machine-ben>. Hozzáférés ideje: 15 July 2007, főképp Charleston[6]. (Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993.)
South Carolina, State of (1984), S.C. Code of Laws, SECTION 1-1-690. Official State beverage., <http://www.scstatehouse.net/code/t01c001.htmArchiválva2007. június 30-i dátummal a Wayback Machine-ben>. Hozzáférés ideje: 15 July 2007, főképp Charleston[6]. (Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993.)