MLA

Barbara Allen's Cruelty, or, The Young Man's Tragedy : with Barbara Allen's Lamentation for Her Unkindness to Her Lover, and Her Ownself [Sic]. Licensed and Entered According to Order. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/17124689.

APA, 6th edition

Barbara Allen's cruelty, or, The young man's tragedy : with Barbara Allen's lamentation for her unkindness to her lover, and her ownself [sic]. Licensed and entered according to order. (0 C.E.). [Early works to 1800, Broadside poems 1760, Woodcuts England London 1760, Single sheet verse]. publisher not identified. https://collections.library.yale.edu/catalog/17124689.