Ghatak, A. Optics 7th Ed. Tata McGraw Hill.
Chicago-čujuhus (17. p.)Ghatak, Ajoy. Optics 7th Ed. Tata McGraw Hill.
MLA-čujuhus (9. p.)Ghatak, Ajoy. Optics 7th Ed. Tata McGraw Hill.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.