Cite

G988b. Adder's Tongue. Two Plants.

MLA

McClintock, Walter, 1870-1949. G988b. Adder's Tongue. Two Plants.. Box 117, folder 5520. 1909 Summer. https://collections.library.yale.edu/catalog/10451353.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 117, folder 5520"])(1909 Summer)[G988b. Adder's Tongue. Two Plants.]. https://collections.library.yale.edu/catalog/10451353.