Whitman, R. F. (1987). Speaking in public. Macmillan.
Lua i Stíl Chicago (17ú heag.)Whitman, Richard F. Speaking in Public. New York: Macmillan, 1987.
Lua MLA (9ú heag.)Whitman, Richard F. Speaking in Public. Macmillan, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.