Keh-Jian Shou และผู้แต่งคนอื่นๆ. (2018) Trenchless Excavations for Underground Pipelines in Difficult Geology. <i>The Geotechnical Engineering Journal of the SEAGS & AGSSEA</i>, <i>49</i>(2), pp 131-135.Keh-Jian Shou และผู้แต่งคนอื่นๆ. "Trenchless Excavations for Underground Pipelines in Difficult Geology". The Geotechnical Engineering Journal of the SEAGS & AGSSEA 49 (2018):pp 131-135.Keh-Jian Shou และผู้แต่งคนอื่นๆ. Trenchless Excavations for Underground Pipelines in Difficult Geology. Southeast Asian Geotechnical Society:ม.ป.ท. 2018.