A.C.Y. Sim และผู้แต่งคนอื่นๆ. (2016) Characteristics of Hardpan Calcrete of the Nyalau Formation and Impact on Design of Foundations. <i>The Geotechnical Engineering Journal of the SEAGS & AGSSEA</i>, <i>47</i>(4), pp 71-79.A.C.Y. Sim และผู้แต่งคนอื่นๆ. "Characteristics of Hardpan Calcrete of the Nyalau Formation and Impact on Design of Foundations". The Geotechnical Engineering Journal of the SEAGS & AGSSEA 47 (2016):pp 71-79.A.C.Y. Sim และผู้แต่งคนอื่นๆ. Characteristics of Hardpan Calcrete of the Nyalau Formation and Impact on Design of Foundations. Southeast Asian Geotechnical Society:ม.ป.ท. 2016.