APA-referens (7:e uppl.)

Harvard University Library, Tillinghast, W. H., & Welsh, C. (1968). Catalogue of English and American chapbooks and broadside ballads in Harvard College Library. Singing Tree Press.

Chicago-referens (17:e uppl.)

Harvard University Library, William H. Tillinghast, och Charles Welsh. Catalogue of English and American Chapbooks and Broadside Ballads in Harvard College Library. Detroit: Singing Tree Press, 1968.

MLA-referens (9:e uppl.)

Harvard University Library, et al. Catalogue of English and American Chapbooks and Broadside Ballads in Harvard College Library. Singing Tree Press, 1968.