Cite

Castle Creek Canon. Colorado No. 27.

MLA

Ingersoll, Ernest, 1852-1946, Jackson, William Henry, 1843-1942. Castle Creek Canon. Colorado No. 27.. https://collections.library.yale.edu/catalog/2018664.

APA, 6th edition

Ingersoll, Ernest, 1852-1946, & Jackson, William Henry, 1843-1942. [Castle Creek Canon. Colorado No. 27.]. https://collections.library.yale.edu/catalog/2018664.