Gaya APA
Creswell, John W. (1994).
Research Design Qualitative & Quantitative Approaches .
United Kindom:
Sage Publications.
Gaya Chicago
Creswell, John W.
Research Design Qualitative & Quantitative Approaches.
United Kindom:
Sage Publications,
1994.
Buku.
Gaya MLA
Creswell, John W.
Research Design Qualitative & Quantitative Approaches.
United Kindom:
Sage Publications,
1994.
Buku.
Gaya Turabian
Creswell, John W.
Research Design Qualitative & Quantitative Approaches.
United Kindom:
Sage Publications,
1994.
Buku.