Albums of pencil sketches and water colors.
MLA
Ruskin, John, 1819-1900. Albums of pencil sketches and water colors.. Box 32. undated. https://collections.library.yale.edu/catalog/16109647.
APA, 6th edition
Ruskin, John, 1819-1900. (["Box 32"])(undated)[Albums of pencil sketches and water colors.]. https://collections.library.yale.edu/catalog/16109647.