MLA

Ruskin, John, 1819-1900. Poems, 1829-1832 - Notebook containing miscellaneous poetry in manuscript. In a blue morocco slip-case.. Box 24. 1829-1832. https://collections.library.yale.edu/catalog/2020268.

APA, 6th edition

Ruskin, John, 1819-1900. (["Box 24"])(1829-1832)[Poems, 1829-1832 - Notebook containing miscellaneous poetry in manuscript. In a blue morocco slip-case.]. https://collections.library.yale.edu/catalog/2020268.