Gaya APA

Nasution, S. (2008). Metode Research : Penelitian Ilmiah Usul Tesis, Desain Penelitian, Hipotesis, Validitas, Sampling, Populasi, Observasi, Wawancara, Angket (cet.10.ed.1). Jakarta: Bumi Aksara.

Gaya MLA

Nasution, S.. "Metode Research : Penelitian Ilmiah Usul Tesis, Desain Penelitian, Hipotesis, Validitas, Sampling, Populasi, Observasi, Wawancara, Angket". cet.10.ed.1 Jakarta: Bumi Aksara, 2008. Text.