Franklin

MLA

Valentino, David W., and Alexander E Gates. The Mid-atlantic Piedmont: Tectonic Missing Link of the Appalachians. Boulder, Colo.: Geological Society of America, 1999.

APA

Valentino, D. W., & Gates, A. E. (1999). The Mid-Atlantic Piedmont: tectonic missing link of the Appalachians. Boulder, Colo.: Geological Society of America.

Chicago

Valentino, David W., and Alexander E. Gates. The Mid-Atlantic Piedmont: Tectonic Missing Link of the Appalachians. Boulder, Colo.: Geological Society of America, 1999.