APA-čujuhus (7. p.)
Ludwig, E. E. (1991). Applied Process Design For Chemical and Petrochemical Plants (2a edición.). Gulf.
Chicago-čujuhus (17. p.)
Ludwig, Ernest E. Applied Process Design For Chemical and Petrochemical Plants. 2a edición. Houston, EUA: Gulf, 1991.
MLA-čujuhus (9. p.)
Ludwig, Ernest E. Applied Process Design For Chemical and Petrochemical Plants. 2a edición. Gulf, 1991.
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