Laskowski, L. (2012). Painless presentations: The proven, stress-free way to successful public speaking. Wiley.
Lua i Stíl Chicago (17ú heag.)Laskowski, Lenny. Painless Presentations: The Proven, Stress-free Way to Successful Public Speaking. Hoboken, New Jersey: Wiley, 2012.
Lua MLA (9ú heag.)Laskowski, Lenny. Painless Presentations: The Proven, Stress-free Way to Successful Public Speaking. Wiley, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.