Istanti, Lulu Nurul. 2009. “ENGARUH ARGA AHAM, RADING OLUME CTIVITY AN ISIKO AHAM ERHADAP ID-SK PREAD (Studi ada erusahaan Q-45 i ursa fek akarta)”. urnal konomi odernisasi 5 (3):199-210. http://ejournal.unikama.ac.id/index.php/JEKO/article/view/229.