Ridge, A. A., & Ridge, J. W. (2000). Introducing the Yellowstone Trail: A good road from Plymouth Rock to Puget Sound, 1912-1930. Yellowstone Trail Publishers.
Cita Chicago Style (17a ed.)Ridge, Alice A., y John William Ridge. Introducing the Yellowstone Trail: A Good Road from Plymouth Rock to Puget Sound, 1912-1930. Altoona, Wis.: Yellowstone Trail Publishers, 2000.
Cita MLA (8a ed.)Ridge, Alice A., y John William Ridge. Introducing the Yellowstone Trail: A Good Road from Plymouth Rock to Puget Sound, 1912-1930. Yellowstone Trail Publishers, 2000.
Precaución: Estas citas no son 100% exactas.