Ilham Yusuf Akbar, and Jamaaluddin. “Fuzzy Efisiensi Penerangan Dengan Rangkaian Joule Thief Saat Listrik Padam”. SinarFe7, vol. 1, no. 1, July 2018, pp. 328-33, https://journal.fortei7.org/index.php/sinarFe7/article/view/555.