Perry, M. (2005). Confidence boosters: 10 steps to beating self-doubt. Hamlyn.
Lua i Stíl Chicago (17ú heag.)Perry, Martin. Confidence Boosters: 10 Steps to Beating Self-doubt. London: Hamlyn, 2005.
Lua MLA (9ú heag.)Perry, Martin. Confidence Boosters: 10 Steps to Beating Self-doubt. Hamlyn, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.