Gaya APA

Nasution, S. (2003). Metode Research : penelitian ilmiah : usul tesis, desain penelitian, hipotesis, validitas, sampling, populasi, observasi, wawancara, angket . Jakarta: Bumi Aksara.

Gaya MLA

Nasution, S.. "Metode Research : penelitian ilmiah : usul tesis, desain penelitian, hipotesis, validitas, sampling, populasi, observasi, wawancara, angket". Jakarta: Bumi Aksara, 2003. Text.