Jebens, Brandon (Fall 1999). "The Biogeography of Sequoia sempervirens". Student Paper, Geography 316: Biogeography. San Francisco State University Department of Geography. Archived from the original on April 11, 2011. Retrieved May 25, 2011.
Jebens, Brandon (Fall 1999). "The Biogeography of Sequoia sempervirens". Student Paper, Geography 316: Biogeography. San Francisco State University Department of Geography. Archived from the original on April 11, 2011. Retrieved May 25, 2011.