Sharp, A. The evil of Mr. Happiness: Can you defeat the schemes of a criminal mastermind? (4a ed.).
Lua i Stíl Chicago (17ú heag.)Sharp, Allen. The Evil of Mr. Happiness: Can You Defeat the Schemes of a Criminal Mastermind? 4a ed.
Lua MLA (8ú heag.)Sharp, Allen. The Evil of Mr. Happiness: Can You Defeat the Schemes of a Criminal Mastermind? 4a ed.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.