Gaya APA

Singarimbun, M., Effendi, S. (1999). METODE PENELITIAN SURVAI . 1999: PT. Pustaka LP3ES.

Gaya MLA

Singarimbun, Masri., Effendi, Sofian. "METODE PENELITIAN SURVAI". 1999: PT. Pustaka LP3ES, 1999. Text.