MLA

Gibbons, Sandra, 1982-, artist. A MOUNTED UMBRELLA. Box 1 | Folder 22. 2012. https://collections.library.yale.edu/catalog/16068736.

APA, 6th edition

Gibbons, Sandra, 1982-, artist. (["Box 1 | Folder 22"])(2012)[A MOUNTED UMBRELLA]. https://collections.library.yale.edu/catalog/16068736.