Howell, M. T. (2014). Effective implementation of an ISO 50001 energy management system (EnMS). ASQ Quality Press.
Chicago-viite (17. p.)Howell, Marvin T. Effective Implementation of an ISO 50001 Energy Management System (EnMS). Milwaukee, Wisconsin: ASQ Quality Press, 2014.
MLA-viite (9. p.)Howell, Marvin T. Effective Implementation of an ISO 50001 Energy Management System (EnMS). ASQ Quality Press, 2014.
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