Lestari, D., and A. Yulianto. “PENGARUH PEMBERIAN TUGAS, MOTIVASI BERPRESTASI, KEMAMPUAN BERPIKIR KRITIS, KEMANDIRIAN BELAJAR, DAN KEDISIPLINAN BELAJAR TERHADAP KREATIVITAS BELAJAR”. Economic Education Analysis Journal, Vol. 6, no. 2, Aug. 2017, pp. 459-74, https://journal.unnes.ac.id/sju/eeaj/article/view/16436.