Respati, Harianto. “EJARAH ONSEPSI EMIKIRAN EWIRAUSAHAAN”. Jurnal Ekonomi Modernisasi 5, no. 3 (October 5, 2009): 211–223. ccessed July 21, 2024. http://ejournal.unikama.ac.id/index.php/JEKO/article/view/230.