Thitichoatariyakun และผู้แต่งคนอื่นๆ. (2018) Adding Ferrous Sulphate to Hydrogen Peroxide Tooth Bleaching Gels Reduced the Required Bleaching Time. <i>Journal of The Dental Association of Thailand</i>, <i>68</i>(2), 153-164.Thitichoatariyakun และผู้แต่งคนอื่นๆ. "Adding Ferrous Sulphate to Hydrogen Peroxide Tooth Bleaching Gels Reduced the Required Bleaching Time". Journal of The Dental Association of Thailand 68 (2018):153-164.Thitichoatariyakun และผู้แต่งคนอื่นๆ. Adding Ferrous Sulphate to Hydrogen Peroxide Tooth Bleaching Gels Reduced the Required Bleaching Time. The Dental Association of Thailand:ม.ป.ท. 2018.