Gaya APA
CRESWELL, JOHN W.. (2016).
RESEARCH DESIGN (EDISI 4).
YOGYAKARTA:
PENERBIT.
Gaya Chicago
CRESWELL, JOHN W..
RESEARCH DESIGN.
EDISI 4
YOGYAKARTA:
PENERBIT,
2016.
Text.
Gaya MLA
CRESWELL, JOHN W..
RESEARCH DESIGN.
EDISI 4
YOGYAKARTA:
PENERBIT,
2016.
Text.
Gaya Turabian
CRESWELL, JOHN W..
RESEARCH DESIGN.
EDISI 4
YOGYAKARTA:
PENERBIT,
2016.
Print.