Tuty Sariwulan and Fera Pujiastuti (2019) “THE IMPACT OF SELF-EFFICACY, LEARNING MOTIVATION, AND PROCRASTINATION ON ACADEMIC ACHIEVEMENT OF STUDENTS FACULTY OF ECONOMICS, JAKARTA STATE UNIVERSITY”, Jurnal Ilmiah Econosains, 17(2), pp. 131–143. doi: 10.21009/econosains.0172.04.