Yule, George. The study of language / George Yule. - 4th ed. - New Delhi: Cambridge University, c2014. - xvii, 318p.: ill.;, figs.; 21 cm. Includes references (p. 297-306) and index. Dept. of English ISBN: 9781107647220 Subjects--Topical Terms: The origins of language Dewey Class. No.: 410 / YUS