Donald J. Orth and Roger L. Payne (2003). "Principles, Policies, and Procedures"(PDF). United States Board on Geographic Names and Domestic Geographic Names. Archived from the original(PDF) on January 8, 2016. Retrieved July 7, 2009.
Donald J. Orth and Roger L. Payne (2003). "Principles, Policies, and Procedures"(PDF). United States Board on Geographic Names and Domestic Geographic Names. Archived from the original(PDF) on January 8, 2016. Retrieved July 7, 2009.