Munifah, S.S. et al. 2017. HUBUNGAN RENTANG UKURAN BUTIR TERHADAP BESARAN BATUAN. PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL). 6, (Oct. 2017), SNF2017–EPA. DOI:https://doi.org/10.21009/03.SNF2017.02.EPA.13.