Lua APA (7ú heag.)

LEVENHAGEN, J. I. (1999). HVAC control system design diagrams. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

LEVENHAGEN, John I. HVAC Control System Design Diagrams. New York: McGraw-Hill, 1999.

Lua MLA (9ú heag.)

LEVENHAGEN, John I. HVAC Control System Design Diagrams. McGraw-Hill, 1999.

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