The Princeton Language Institute, Princeton Language Institute, Philip Lief Group, & Laskowski, L. (2001). 10 days to more confident public speaking. Warner Books.
Chicagoスタイル(17版)引用形式The Princeton Language Institute, Princeton Language Institute, Philip Lief Group, , Lenny Laskowski. 10 Days to More Confident Public Speaking. New York: Warner Books, 2001.
MLA(8版)引用形式The Princeton Language Institute, et al. 10 Days to More Confident Public Speaking. Warner Books, 2001.
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