MLA

Seneca, Lucius Annaeus, approximately 4 B.C.-65 A.D., author. L. Annei Senecae Tragoediae cu[m] duobus co[m]mentis. Mcccclxxxxiii die xviii Iulii [18 July 1493]. https://collections.library.yale.edu/catalog/33204227.

APA, 6th edition

Seneca, Lucius Annaeus, approximately 4 B.C.-65 A.D., author. (Mcccclxxxxiii die xviii Iulii [18 July 1493])[L. Annei Senecae Tragoediae cu[m] duobus co[m]mentis]. https://collections.library.yale.edu/catalog/33204227.