P. Raper
发表
P. Raper,
2010
.
P. Raper,
2009
.
P. Raper,
Lucie A Moller,
1987
.
P. Raper,
2019,
Handbook of the Changing World Language Map.
P. Raper,
2017
.
L. A. Möller,
P. Raper,
2015
.
P. Raper,
2010
.
P. Raper,
2000
.
P. Raper,
2008
.
P. Raper,
2012
.