Nasution, S.
Metode research (penelitian ilmiah) : usul tesis, desain penelitian, hipotesis, validitas, sampling, populasi, observasi, wawancara, angket
Bumi Aksara, 1996
Buku Teks
Mohammad Nazir
Metode penelitian
Ghalia Indonesia, 1988
Buku Teks SO
Pengantar metode penelitian=an introduction to research methods
by Consuelo G. Sevilla ... [and others]
UI-Press , 1993
Buku Teks SO
Research methods: guidance for postgraduates
edited by Tony Greenfield
Arnold , 1996
Buku Teks SO
Walliman, Nicholas
Your research project : a step-by-step guide for the first-time researcher
Sage Publications Ltd , 2001
Buku Teks SO