<SURYABRATA, S. Metodologi penelitian. RajaGrafindo Persada.
Chicago Style (17th ed.) Citation<SURYABRATA, Sumadi>. Metodologi Penelitian. RajaGrafindo Persada.
MLA (8th ed.) Citation<SURYABRATA, Sumadi>. Metodologi Penelitian. RajaGrafindo Persada.
Warning: These citations may not always be 100% accurate.