Norris, C. G. (1933). Zest. William Heinemann.
Lua i Stíl Chicago (17ú heag.)Norris, Charles G. Zest. London: William Heinemann, 1933.
Lua MLA (8ú heag.)Norris, Charles G. Zest. William Heinemann, 1933.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.