Gaya APA
Leedy, P, D., ORMROD, J, E.
(2005).
PRACTICAL RESEARCH: PLANNING AND DESIGN
(
8)
.
:
.
Gaya MLA
Leedy, Paul, D.., ORMROD, Jeanne, Ellis.
"PRACTICAL RESEARCH: PLANNING AND DESIGN".
8
:
,
2005.
Text.