Analisis pengaruh harga minyak dan nilai tukar terhadap return indeks harga saham gabungan ihsg periode 2008-2013 (studi tambahan pada saat depresiasi rupiah 2008 dan pada periode 2013) = Analysis of effect of oil price and exchange rate price to return of composite stock price index cspi period 2008-2013 (additional studies at the depreciation of rupiah in 2008 and 2013) / Windara Astuti Ega