APA

Blodgett J., Connors M., Griffith T., Cabasin L., Sullivan M. & National park foundation. (2013). The official Guide to America's National Parks. New York: Fodor's Travel Publications.

Chicago

Blodgett J, Connors M, Griffith T, Cabasin L, Sullivan M and National park foundation. 2013. The official Guide to America's National Parks. New York: Fodor's Travel Publications.

Harvard

Blodgett J., Connors M., Griffith T., Cabasin L., Sullivan M. and National park foundation. (2013). The official Guide to America's National Parks. New York: Fodor's Travel Publications.

MLA

Blodgett J, Connors M, Griffith T, Cabasin L, Sullivan M and National park foundation. The official Guide to America's National Parks. New York: Fodor's Travel Publications. 2013.