Sitompul, J. P., S. Sumardiono, and M. W. Sariyanto. “STUDI ANALISIS EFISIENSI ENERGI DAN TEKNO EKONOMI PENGERINGAN BUTIRAN MULTI TAHAP”. Mesin, vol. 16, no. 1, May 2017, pp. 11-17, https://journals.itb.ac.id/index.php/jtms/article/view/4872.