Rodgers, Jeffrey Pepper (Spring 2005). "National Geographer". Maxwell Perspective Magazine. The Maxwell School of Syracuse University. Archived from the original on 27 September 2021. Retrieved 6 May 2021.
Rodgers, Jeffrey Pepper (Spring 2005). "National Geographer". Maxwell Perspective Magazine. The Maxwell School of Syracuse University. Archived from the original on 27 September 2021. Retrieved 6 May 2021.