Cook, G. J. (1967). The art of making people listen to you (ed.). Vikas publishing House.
Lua i Stíl Chicago (17ú heag.)Cook, Glenn J. The Art of Making People Listen to You. ed. Jangpura, New Delphi: Vikas publishing House, 1967.
Lua MLA (9ú heag.)Cook, Glenn J. The Art of Making People Listen to You. ed. Vikas publishing House, 1967.
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