Cita APA (7th ed.)

Prochnow , H. (1987). The public speakers treasure chest. I.B.D.

Cita Chicago (17th ed.)

Prochnow , Herbert. The Public Speakers Treasure Chest. Bombay: I.B.D, 1987.

Cita MLA (9th ed.)

Prochnow , Herbert. The Public Speakers Treasure Chest. I.B.D, 1987.