MLA

Barrie, J. M. (James Matthew), 1860-1937. Charles Frohman presents William Gillette in Dear Brutus, a comedy in three acts by J.M. Barrie .... [188-?]. https://collections.library.yale.edu/catalog/2008255.

APA, 6th edition

Barrie, J. M. (James Matthew), 1860-1937. ([188-?])[Charles Frohman presents William Gillette in Dear Brutus, a comedy in three acts by J.M. Barrie ...]. https://collections.library.yale.edu/catalog/2008255.