Hudson, M. (1984). DP index & software (8th ed.). Peter Isaacson.
Lua i Stíl Chicago (17ú heag.)Hudson, Malcolm. DP Index & Software. 8th ed. Prahran, Victoria: Peter Isaacson, 1984.
Lua MLA (9ú heag.)Hudson, Malcolm. DP Index & Software. 8th ed. Peter Isaacson, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.