Gardner, D. (1998). Furtures and options. Macmillan.
Lua i Stíl Chicago (17ú heag.)Gardner, D. Furtures and Options. Delhi: Macmillan, 1998.
Lua MLA (9ú heag.)Gardner, D. Furtures and Options. Macmillan, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.