BLACK, J. A. (1992). Metode Dan Masalah Penelitian Sosial [methods And Issues In Social Research] James A. Black. s.n.
Lua i Stíl Chicago (17ú heag.)BLACK, James A. Metode Dan Masalah Penelitian Sosial [methods And Issues In Social Research] James A. Black. s.n, 1992.
Lua MLA (8ú heag.)BLACK, James A. Metode Dan Masalah Penelitian Sosial [methods And Issues In Social Research] James A. Black. s.n, 1992.
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