MLA

Book, Beinecke Rare, and Manuscript Library. Soulié, Frederic. 0AD. https://collections.library.yale.edu/catalog/17353472.

APA, 6th edition

Book, B. R., & Library, M. (0 C.E.). Soulié, Frederic. https://collections.library.yale.edu/catalog/17353472.