Amir, F., B. Cut, R. Rayan, B. Khoir, N. Nasruddin, and M. Amin. “Experimental Study of The Influence Use of Beeswax Against The Mechanical and Thermal Properties of Concrete”. SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin, vol. 14, no. 1, June 2020, pp. 22-26, doi:10.24853/sintek.14.1.22-26.