Thapanawat Nitithanyarattana และผู้แต่งคนอื่นๆ. (1998) Precipitation in solutions containing mixture of synthetic surfactant and soap : II. effect of sodium dodecyl sulfate on hardness tolerance of sodium octanoate. Chulalongkorn University:ม.ป.ท.Thapanawat Nitithanyarattana และผู้แต่งคนอื่นๆ. 1998. Precipitation in solutions containing mixture of synthetic surfactant and soap : II. effect of sodium dodecyl sulfate on hardness tolerance of sodium octanoate. ม.ป.ท.:Chulalongkorn University;Thapanawat Nitithanyarattana และผู้แต่งคนอื่นๆ. Precipitation in solutions containing mixture of synthetic surfactant and soap : II. effect of sodium dodecyl sulfate on hardness tolerance of sodium octanoate. ม.ป.ท.:Chulalongkorn University, 1998. Print.