Ritchie, Kevin (June 1, 2008). "Single sell". Boards. Brunico Communications. Archived from the original on November 21, 2008. Retrieved December 27, 2008.
Ritchie, Kevin (June 1, 2008). "Single sell". Boards. Brunico Communications. Archived from the original on November 21, 2008. Retrieved December 27, 2008.