GELLHORN, E. (1987). Regulated Industries Ernest Gellhorn, Richard J. Pierce. West Publishing Compan.
Čikaški stil citiranja (17. izdanje)GELLHORN, Ernest. Regulated Industries Ernest Gellhorn, Richard J. Pierce. West Publishing Compan, 1987.
MLA način citiranja (8. izdanje)GELLHORN, Ernest. Regulated Industries Ernest Gellhorn, Richard J. Pierce. West Publishing Compan, 1987.
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