Gaya APA
S, N. (2007).
Metode research: penelitian ilmiah usul tesis, desain penelitian, hipotesis, validasi, sampling, populasi, observasi, wawancara, angket .
Jakarta:
BUMI AKSARA.
Gaya MLA
S, N..
Metode research: penelitian ilmiah usul tesis, desain penelitian, hipotesis, validasi, sampling, populasi, observasi, wawancara, angket.
Jakarta:
BUMI AKSARA,
2007.
Text.