MLA

Chaucer, Geoffrey, -1400. The works of Geoffrey Chaucer, compared with the former editions, and many valuable mss. out of which, three tales are added which were never before printed. 1721.. https://collections.library.yale.edu/catalog/2004510.

APA, 6th edition

Chaucer, Geoffrey, -1400. (1721.)[The works of Geoffrey Chaucer, compared with the former editions, and many valuable mss. out of which, three tales are added which were never before printed]. https://collections.library.yale.edu/catalog/2004510.