Manurung, Sondang R, Mara Bangun Harahap, Nuryani Y Rustaman, and Benny Suprapto Brotosiswoyo. 2018. “IMPLEMENTATION OF QUANTUM PHYSICS INTRODUCTION AID ON VIRTUAL LABORATORIES TO IMPROVE PROFICIENCY GENERIC”. Jurnal Kependidikan: Penelitian Inovasi Pembelajaran 2 (2). Yogyakarta, Indonesia:382-94. https://doi.org/10.21831/jk.v2i2.15136.