Gaya APA
Nasution, S.
(2004).
Metode Research : Penelitian Ilmiah
(
1 st, 1 ed)
.
Jakata:
Bumi Aksara.
Gaya MLA
Nasution, S.
"Metode Research : Penelitian Ilmiah".
1 st, 1 ed
Jakata:
Bumi Aksara,
2004.
Text.