Riyanto, Dodi, Hendra Cahyadi, and Rida Respati. “Pengaruh Pemakaian Arang Batok Kelapa Terhadap Kuat Tekan Beton K225”. Media Ilmiah Teknik Sipil 6, no. 2 (June 1, 2018): 94–101. Accessed April 18, 2024. https://journal.umpr.ac.id/index.php/mits/article/view/252.