Piwpan, P., Jaturapiree, A., & Jaturapiree, P. (2016). Isolation and production of polyhydroxybutyrate (PHB) from isolated strain bacillus sp. using crude glycerol as a carbon source. Asia-Pacific Journal of Science and Technology, 21(2), 376–384. https://doi.org/10.14456/kkurj.2016.44