Hahner, J. C. (2004). Speaking clearly: Improving voice and diction. Boston: McGraw-Hill.
Čikaški stil citiranjaHahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. Boston: McGraw-Hill, 2004.
MLA način citiranjaHahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. Boston: McGraw-Hill, 2004.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.