Miscellaneous Notebooks - 5 manuscript notebooks.
MLA
Ruskin, John, 1819-1900. Miscellaneous Notebooks - 5 manuscript notebooks.. Box 20. undated. https://collections.library.yale.edu/catalog/16655415.
APA, 6th edition
Ruskin, John, 1819-1900. (["Box 20"])(undated)[Miscellaneous Notebooks - 5 manuscript notebooks.]. https://collections.library.yale.edu/catalog/16655415.