Berkowitz, N. (1979). An introduction to coal technology. Academic Press. https://doi.org/10.1016/C2012-0-01440-8
Čikaški stil citiranja (17. izdanje)Berkowitz, N. An Introduction to Coal Technology. New York: Academic Press, 1979. https://doi.org/10.1016/C2012-0-01440-8.
MLA način citiranja (9. izdanje)Berkowitz, N. An Introduction to Coal Technology. Academic Press, 1979. https://doi.org/10.1016/C2012-0-01440-8.
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