R. Berl
发表
Nicholas C. Williamson,
R. Berl,
Terry Powell,
2013
.
R. Berl,
Hudson P. Rogers,
Reginald M. Peyton,
2015
.
Nicholas C. Williamson,
R. Berl,
Terry Powell,
1984
.
R. Berl,
R. Sweeney,
R. Hooper,
1989,
Journal of ambulatory care marketing.
William E. Warren,
W. E. Warren,
R. Berl,
1989
.
R. Berl,
R. Sweeney,
R Berl,
1985,
Home health journal.
A. Okunade,
R. Berl,
Robert L. Berl,
1997
.
E. Babakus,
R. Berl,
C. M. Kochunny,
1993
.