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BOOHER, DIANNA. (2004). SPEAK WITH CONFIDENCE . JAKARTA: Bhuana Ilmu Populer.

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BOOHER, DIANNA. SPEAK WITH CONFIDENCE. JAKARTA: Bhuana Ilmu Populer, 2004. Text.

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BOOHER, DIANNA. SPEAK WITH CONFIDENCE. JAKARTA: Bhuana Ilmu Populer, 2004. Text.

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BOOHER, DIANNA. SPEAK WITH CONFIDENCE. JAKARTA: Bhuana Ilmu Populer, 2004. Print.