Fordham, H. G. (1928). Hand-list of catalogues and works of reference relating to carto-bibliography and kindred subjects for Great Britain and Ireland, 1720 to 1927. University Press.
Lua i Stíl Chicago (17ú heag.)Fordham, Herbert George. Hand-list of Catalogues and Works of Reference Relating to Carto-bibliography and Kindred Subjects for Great Britain and Ireland, 1720 to 1927. Cambridge [England]: University Press, 1928.
Lua MLA (8ú heag.)Fordham, Herbert George. Hand-list of Catalogues and Works of Reference Relating to Carto-bibliography and Kindred Subjects for Great Britain and Ireland, 1720 to 1927. University Press, 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.