LEWIS BERNARD T. (1999). FACILITY MANAGER`S OPERATION AND MAINTENANCE HANDBOOK. MCGRAW-HILL.
Lua i Stíl Chicago (17ú heag.)LEWIS BERNARD T. FACILITY MANAGER`S OPERATION AND MAINTENANCE HANDBOOK. NEW YORK: MCGRAW-HILL, 1999.
Lua MLA (9ú heag.)LEWIS BERNARD T. FACILITY MANAGER`S OPERATION AND MAINTENANCE HANDBOOK. MCGRAW-HILL, 1999.
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