"Recycle – Save Energy". South Carolina Electric & Gas Company. 1991. Diarsipkan dari versi asli tanggal 11 September 2007. Diakses tanggal 20 October 2007.
Cheang, Monica (Maret 1992). "Debunking the Myths of Recycled Paper". Internet Archive Wayback machine. Archived from the original on 2006-10-06. Diakses tanggal 11 November 2019.Pemeliharaan CS1: Url tak layak (link)
"Recycle – Save Energy". South Carolina Electric & Gas Company. 1991. Diarsipkan dari versi asli tanggal 11 September 2007. Diakses tanggal 20 October 2007.