Gaya APA
Social Research Methods Qualitative And Quantitative Approaches. (1999).
:
.
Gaya Chicago
Social Research Methods Qualitative And Quantitative Approaches.
Fourth Ed.
:
,
1999.
.
Gaya MLA
Social Research Methods Qualitative And Quantitative Approaches.
Fourth Ed.
:
,
1999.
.
Gaya Turabian
Social Research Methods Qualitative And Quantitative Approaches.
:
,
1999.
.