Jurgen, R. K. (1998). Actuators. Society of Automotive Engineers.
Lua i Stíl Chicago (17ú heag.)Jurgen, Ronald K. Actuators. Warrendale, PA: Society of Automotive Engineers, 1998.
Lua MLA (8ú heag.)Jurgen, Ronald K. Actuators. Society of Automotive Engineers, 1998.
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