The pilgrim's progress ...
MLA
Bunyan, John, 1628-1688. The pilgrim's progress .... 1683.. https://collections.library.yale.edu/catalog/2011371.
APA, 6th edition
Bunyan, John, 1628-1688. (1683.)[The pilgrim's progress ...]. https://collections.library.yale.edu/catalog/2011371.