W. R. Willis
发表
M. Robinson,
A. Southern,
W. R. Willis,
1963
.
Russell P. Balda,
R. Balda,
W. R. Willis,
1983,
The American Naturalist.
W. R. Willis,
E. Jewett,
F. D. Stanford,
1955,
The Journal of the International College of Surgeons.
M. Robinson,
A. Southern,
W. R. Willis,
1960
.