MLA

The Leeds Tragedy: or, The Bloody Brother. Sold at no. 42, Long Lane, 0AD. https://collections.library.yale.edu/catalog/17124752.

APA, 6th edition

The Leeds tragedy: or, The bloody brother. (0 C.E.). [Early works to 1800, Single sheet verse, Broadside poems, Woodcuts England London 1795]. Sold at no. 42, Long Lane. https://collections.library.yale.edu/catalog/17124752.