Karol, R. H. (1955). Engineering properties of soils. Prentice-Hall.
Čikaški stil citiranja (17. izdanje)Karol, Reuben Hirsh. Engineering Properties of Soils. New york: Prentice-Hall, 1955.
MLA način citiranja (9. izdanje)Karol, Reuben Hirsh. Engineering Properties of Soils. Prentice-Hall, 1955.
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