Donnay, Joseph Désiré Hubert (1963). Crystal Data; Determinative Tables (in ஆங்கிலம்). American Crystallographic Association. p. 1155. Retrieved 16 September 2024.
Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds (in ஆங்கிலம்). National Bureau of Standards. p. H-62. Retrieved 16 September 2024.