Steven A. Ragan
发表
Michael J. Boyle,
Robert L. Yuan,
Leonard W. Bell,
1998
.
David W. Pittman,
Steven A. Ragan,
William P. Grogan,
1990
.
Steven A. Ragan,
Billy D. Neeley,
1997
.
Steven A. Ragan,
1986
.
Steven A. Ragan,
1984
.
Kenneth C. Hover,
Bryant Mather,
Richard E. Miller,
2005
.
Ronald L. Hutchinson,
David W. Pittman,
Steven A. Ragan,
1987
.
Steven A. Ragan,
1978
.
David W. Pittman,
Steven A. Ragan,
S. Ragan,
1986
.
Steven A. Ragan,
1991
.
Edward A. Abdun-Nur,
Tarif M. Jaber,
Leonard W. Bell,
1997
.
Gary Knight,
Tarif M. Jaber,
Warren E. McPherson,
2008
.