D. Scholz. (2002). Proportional hydraulics. Workbook Advanced Level. Denkendorf: Festo Didactic.
Čikaški stil citiranjaD. Scholz. Proportional Hydraulics. Workbook Advanced Level. Denkendorf: Festo Didactic, 2002.
MLA način citiranjaD. Scholz. Proportional Hydraulics. Workbook Advanced Level. Denkendorf: Festo Didactic, 2002.
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