(1997). Main types of geological maps purpose, use and preparation. Oxford.
Chicago-čujuhus (17. p.)Main Types of Geological Maps Purpose, Use and Preparation. New Delhi: Oxford, 1997.
MLA-čujuhus (9. p.)Main Types of Geological Maps Purpose, Use and Preparation. Oxford, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.