Suphan Yangyuen และ Juckamas Laohavanich. (2018) Development of a semi-automatic macadamia cracking machine. <i>Engineering and Applied Science Research</i>, <i>45</i>(4), 256-261.Suphan Yangyuen และ Juckamas Laohavanich. "Development of a semi-automatic macadamia cracking machine". Engineering and Applied Science Research 45 (2018):256-261.Suphan Yangyuen และ Juckamas Laohavanich. Development of a semi-automatic macadamia cracking machine. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2018.