Weber, David J. A Grammar of Huallaga (Huánaco) Quechua - Berkeley : University of California Press, 1989. - xxv, 490 p. ; 25 cm. - University of California publications in linguistics ; 12 . Bibliografía, pp. 479-481 ISBN: 0520097327 Subjects--Topical Terms: QUECHUA Universal Decimal Class. No.: 809.821