Ratanā kunʻ saññʻ suṃ" kyokʻ myakʻ ʼabhidhanʻ - Lha Vaṅʻʺ, Ūʺ (Laṅʻʺ Laṅʻʺ Cā pe : [Phran khyi re ], ʼĀʺ Mānʻ Sacʻ Cā pe, 1995)
Handbook on identification of gems and precious stones in Burma.