Cita APA (7th ed.)

Blackenship, J. (1972). Public speaking: A rhetorical perspective (2nd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Blackenship, Jane. Public Speaking: A Rhetorical Perspective. 2nd ed. Englewood Cliffs, N. J: Prentice Hall, 1972.

Cita MLA (9th ed.)

Blackenship, Jane. Public Speaking: A Rhetorical Perspective. 2nd ed. Prentice Hall, 1972.