Collins , P. Art of Speeches & Presentations: The Secrets of Making People remember What You Say. Wiley.
Chicago-čujuhus (17. p.)Collins , Philip. Art of Speeches & Presentations: The Secrets of Making People Remember What You Say. New Delhi: Wiley.
MLA-čujuhus (9. p.)Collins , Philip. Art of Speeches & Presentations: The Secrets of Making People Remember What You Say. Wiley.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.