Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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