Gaya APA
Creswell, John W.. (2014).
Educational research : planning, conducting and evaluating quantitative and qualitative research (4th ed).
Harlow Essex:
Pearson.
Gaya Chicago
Creswell, John W..
Educational research : planning, conducting and evaluating quantitative and qualitative research.
4th ed
Harlow Essex:
Pearson,
2014.
Text.
Gaya MLA
Creswell, John W..
Educational research : planning, conducting and evaluating quantitative and qualitative research.
4th ed
Harlow Essex:
Pearson,
2014.
Text.
Gaya Turabian
Creswell, John W..
Educational research : planning, conducting and evaluating quantitative and qualitative research.
4th ed
Harlow Essex:
Pearson,
2014.
Print.