PARR , A. (1996). HYDURALICS AND PNEUMATICS A TECHNICIANS & ENGG. GUIDE. JAICO PUB.
Lua i Stíl Chicago (17ú heag.)PARR , ANDREW. HYDURALICS AND PNEUMATICS A TECHNICIANS & ENGG. GUIDE. BOMBAY: JAICO PUB, 1996.
Lua MLA (9ú heag.)PARR , ANDREW. HYDURALICS AND PNEUMATICS A TECHNICIANS & ENGG. GUIDE. JAICO PUB, 1996.
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