Prochnow, H. V., & Prochnow, H. V. (1966). The successful toastmaster: A treasure chest of introductions, epigrams, humor, and quotations. Harper & Row.
Citazione stile Chigago Style (17a edizione)Prochnow, Herbert Victor, e Herbert Victor Prochnow. The Successful Toastmaster: A Treasure Chest of Introductions, Epigrams, Humor, and Quotations. New York: Harper & Row, 1966.
Citatione MLA (9a ed.)Prochnow, Herbert Victor, e Herbert Victor Prochnow. The Successful Toastmaster: A Treasure Chest of Introductions, Epigrams, Humor, and Quotations. Harper & Row, 1966.
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