Sumadi, S. (1995). Metode Penelitian. Raja Grafindo Persada.
Chicago Style (17th ed.) CitationSumadi, Suryabrata. Metode Penelitian. Raja Grafindo Persada, 1995.
MLA (8th ed.) CitationSumadi, Suryabrata. Metode Penelitian. Raja Grafindo Persada, 1995.
Warning: These citations may not always be 100% accurate.