Patten, L. B. (1967). The ruthless range. Collins.
Lua i Stíl Chicago (17ú heag.)Patten, Lewis B. The Ruthless Range. London: Collins, 1967.
Lua MLA (8ú heag.)Patten, Lewis B. The Ruthless Range. Collins, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.