MLA

Ruskin, John, 1819-1900. 137 autograph letters, signed, mostly to John James Ruskin. Various places. Bound in blue morocco.. Box 1. 1827-1859. https://collections.library.yale.edu/catalog/2041646.

APA, 6th edition

Ruskin, John, 1819-1900. (["Box 1"])(1827-1859)[137 autograph letters, signed, mostly to John James Ruskin. Various places. Bound in blue morocco.]. https://collections.library.yale.edu/catalog/2041646.