James, S., & Bonnel, P. (2010). Christopher Orr: Time is the diamond.
Lua i Stíl Chicago (17ú heag.)James, Stephanie, agus Peter Bonnel. Christopher Orr: Time Is the Diamond. Bournemouth, 2010.
Lua MLA (8ú heag.)James, Stephanie, agus Peter Bonnel. Christopher Orr: Time Is the Diamond. 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.