Greenhalgh, C. (1995). Supply Side Puzzles.
Lua i Stíl Chicago (17ú heag.)Greenhalgh, C. Supply Side Puzzles. 1995.
Lua MLA (9ú heag.)Greenhalgh, C. Supply Side Puzzles. 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.