PARR, A. (2003). Hydraulics and pneumatics a technician's and engineer's guide (Ed.2.). Elsevier Butterworth-Heinemann.
Lua i Stíl Chicago (17ú heag.)PARR, Andrew. Hydraulics and Pneumatics a Technician's and Engineer's Guide. Ed.2. Amsterdam: Elsevier Butterworth-Heinemann, 2003.
Lua MLA (9ú heag.)PARR, Andrew. Hydraulics and Pneumatics a Technician's and Engineer's Guide. Ed.2. Elsevier Butterworth-Heinemann, 2003.
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