TY  - GEN
AU  - Paul J. Hopper and Closs Traugott
TI  - Grammaticalization
SN  - 0-521-36684-4
U1  - 410HOPG 
PY  - 1993///, Reprinted 1994, 1997, 2000, 2002
CY  - Cambridge, New York, Melbourne
PB  - Cambridge University Press
ER  -