de Ruiter, J. P. The production of gesture and speech: Jan Peter de Ruiter. Language and gesture.(2004).
Lua i Stíl Chicago (17ú heag.)de Ruiter, Jan Peter. "The Production of Gesture and Speech: Jan Peter De Ruiter." Language and Gesture.(2004) .
Lua MLA (8ú heag.)de Ruiter, Jan Peter. "The Production of Gesture and Speech: Jan Peter De Ruiter." Language and Gesture.(2004), .
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