Plate 1 from "Rock and Rock Minerals;." by Louis V. Pirsson.
MLA
Unknown. Plate 1 from "Rock and Rock Minerals;." by Louis V. Pirsson. 1915. https://collections.library.yale.edu/catalog/10016528.
APA, 6th edition
U. (1915). Plate 1 from "Rock and Rock Minerals;." by Louis V. Pirsson. [Books (part of)]. https://collections.library.yale.edu/catalog/10016528.