Day, A., & Harvet, J. M. (1994). Walford's guide to reference material: Social and historical sciences,philosophy and religion (6th ed.). Library association publishing.
Lua i Stíl Chicago (17ú heag.)Day, Alan, agus Joan M. Harvet. Walford's Guide to Reference Material: Social and Historical Sciences,philosophy and Religion. 6th ed. London: Library association publishing, 1994.
Lua MLA (9ú heag.)Day, Alan, agus Joan M. Harvet. Walford's Guide to Reference Material: Social and Historical Sciences,philosophy and Religion. 6th ed. Library association publishing, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.