MLA

Barrie, J. M. (James Matthew), 1860-1937. Stoker, Bram. Box 14, folder 489. 1892. https://collections.library.yale.edu/catalog/11860533.

APA, 6th edition

Barrie, J. M. (James Matthew), 1860-1937. (["Box 14, folder 489"])(1892)[Stoker, Bram]. https://collections.library.yale.edu/catalog/11860533.