Syaifuddinn, syaifuddin., Rosben Sihombing, and Robert Tua Siregar. “Determinants Of Entrepreneurship In PT Propertindo Bersinar Pematang Siantar”. PUBLISH BUKU UNPRI PRESS ISBN, vol. 1, no. 1, Feb. 2025, https://jurnal.unprimdn.ac.id/index.php/ISBN/article/view/6451.