W. S. Crowell
发表
W. S. Crowell,
1927
.
W. S. Crowell,
N. Eberly,
C. Gross,
1920
.
W. S. Crowell,
1954,
Journal of dental research.
G. Paffenbarger,
W. S. Crowell,
H. J. Caul,
1964,
The Journal of the American Dental Association (1939).