Cite

Geologic Map of the Del Rio-Waterville Districts, Tennessee-North Carolina, compiled by Fred B. Keller, plate 2

MLA

Geologic Map of the Del Rio-Waterville Districts, Tennessee-North Carolina, Compiled by Fred B. Keller, Plate 2. 0AD. https://collections.library.yale.edu/catalog/10015587.

APA, 6th edition

Geologic Map of the Del Rio-Waterville Districts, Tennessee-North Carolina, compiled by Fred B. Keller, plate 2. (0 C.E.). [Paper]. https://collections.library.yale.edu/catalog/10015587.