APA
Digerness D., . (1977). The Mineral Belt: Volume 1: Old South Park-Denver to Leadville. [Place of publication unknown]: Sundance Books.
Chicago
Digerness David, . 1977. The Mineral Belt: Volume 1: Old South Park-Denver to Leadville. [Place of publication unknown]: Sundance Books.
Harvard
Digerness D., . (1977). The Mineral Belt: Volume 1: Old South Park-Denver to Leadville. [Place of publication unknown]: Sundance Books.
MLA
Digerness David, . The Mineral Belt: Volume 1: Old South Park-Denver to Leadville. [Place of publication unknown]: Sundance Books. 1977.