Gaya APA
Singarimbun, M., Sofian, E, ,.
(1989).
Metode Penelitian Survai
(
Rev)
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Jakarta:
LP3ES.
Gaya MLA
Singarimbun, Masri., Sofian, Effendi, ,.
"Metode Penelitian Survai".
Rev
Jakarta:
LP3ES,
1989.
Textbook.