Abrams, D. A. (1925). Effect of tannic acid on the strength of concrete. Structural Materials Research Laboratory.
Čikaški stil citiranja (17. izdanje)Abrams, Duff A. Effect of Tannic Acid on the Strength of Concrete. Chicago: Structural Materials Research Laboratory, 1925.
MLA način citiranja (8. izdanje)Abrams, Duff A. Effect of Tannic Acid on the Strength of Concrete. Structural Materials Research Laboratory, 1925.
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