Blackenship, J. (1972). Public speaking: A rhetorical perspective (2nd ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Blackenship, Jane. Public Speaking: A Rhetorical Perspective. 2nd ed. Englewood Cliffs, N. J: Prentice Hall, 1972.
Lua MLA (9ú heag.)Blackenship, Jane. Public Speaking: A Rhetorical Perspective. 2nd ed. Prentice Hall, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.