MLA

The Terrible, Horrible, Monster of the West with a Hydra Head, Argulian-Eyes ... Printed Cum privilegio, where this strange beast is to be seene all Christmas long, 1649. https://collections.library.yale.edu/catalog/2046922.

APA, 6th edition

The terrible, horrible, monster of the West with a hydra head, Argulian-eyes ... (1649). [Plays]. Printed Cum privilegio, where this strange beast is to be seene all Christmas long. https://collections.library.yale.edu/catalog/2046922.