TY  - BOOK
AU  - Donaldson,Stewart I.
AU  - Christie,Christina A  .
AU  - Mark,Melvin M  .
TI  - What counts as credible evidence in applied research and evaluation practice ? / 
SN  - 9781412957076
U1  - 001.42 
PY  - 2009///
CY  - London : 
PB  - Sage Publications , 
KW  - RESEARCH AND EVALUATION
N1  - Includes index
ER  -