Gaya APA
Cresswell, John W.. (1994).
Research Design: Qualitative and Quantitative Approaches .
USA:
Sage Publications.
Gaya Chicago
Cresswell, John W..
Research Design: Qualitative and Quantitative Approaches.
USA:
Sage Publications,
1994.
Texts.
Gaya MLA
Cresswell, John W..
Research Design: Qualitative and Quantitative Approaches.
USA:
Sage Publications,
1994.
Texts.
Gaya Turabian
Cresswell, John W..
Research Design: Qualitative and Quantitative Approaches.
USA:
Sage Publications,
1994.
Texts.