Sunaryo, S., A. Bahrun, L. O. M Magribi, and L. H. La Hatani. “Break Even Point Concrete Casting Using Hand-Assembled Mini-Batching-Plants and Mini-Crane in Small Islands and Coastal Areas”. International Journal of Management and Education in Human Development, vol. 1, no. 01, Mar. 2021, pp. 74-82, https://ijmehd.com/index.php/ijmehd/article/view/135.