Cite

G989a. Bear Grass.

MLA

McClintock, Walter, 1870-1949. G989a. Bear Grass.. Box 117, folder 5522. 1909 Summer. https://collections.library.yale.edu/catalog/10451356.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 117, folder 5522"])(1909 Summer)[G989a. Bear Grass.]. https://collections.library.yale.edu/catalog/10451356.