VAN KREVELEN, D. (1961). Coal: Typology chemistry-physics. Elsevier.
Chicago-čujuhus (17. p.)VAN KREVELEN, D.W. Coal: Typology Chemistry-physics. Amsterdam: Elsevier, 1961.
MLA-čujuhus (9. p.)VAN KREVELEN, D.W. Coal: Typology Chemistry-physics. Elsevier, 1961.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.