R. Powell
发表
O. Tosi,
R. Powell,
O Tosi,
1970,
Journal of speech and hearing research.
R. Powell,
1962
.
R. Powell,
1968
.
C. D. Hall,
R. Powell,
C. Hall,
1969
.
R. Powell,
1965
.
R. Powell,
1960
.
R. Powell,
1968,
The China Quarterly.
R. Powell,
1971
.
R. Powell,
M. Banno,
1956
.
R. Powell,
1963
.