Risnaeni, Umi Suswati. 2015. “Intellectual Capital: Toward The Development of Conceptual Framework For Its Standardized Reporting”. IQTISHODUNA: Jurnal Ekonomi Islam 4 (1):1-16. https://ejournal.iaisyarifuddin.ac.id/index.php/iqtishoduna/article/view/22.