MLA

A Tragical Ballad of the Unfortunate Loves of Lord Thomas and Fair Eleanor : Together with the Downfal of the Brown Girl. Printed and sold at No. 4 Aldermary Church Yard, 0AD. https://collections.library.yale.edu/catalog/17124755.

APA, 6th edition

A tragical ballad of the unfortunate loves of Lord Thomas and fair Eleanor : together with the downfal of the brown girl. (0 C.E.). [Texts, Poetry, Early works to 1800, Ballads, Broadside poems, Woodcuts England London 1760]. Printed and sold at No. 4 Aldermary Church Yard. https://collections.library.yale.edu/catalog/17124755.