R. Williams
发表
L. Pitt,
G. Solarsh,
R. L. Williams,
1999,
Medical education.
R. Williams,
R. Snider,
M. J. Ryan,
1994,
Family practice research journal.
S. Flocke,
L. Acheson,
S. Zyzanski,
1998,
Academic medicine : journal of the Association of American Medical Colleges.
R. Williams,
S. Reid,
R. Williams,
1998,
Family medicine.