STEFFY, G. R. (1995). Lighting Electronic Office Gary R. Steffy. Van Nostrand Reinhold.
Lua i Stíl Chicago (17ú heag.)STEFFY, Gary R. Lighting Electronic Office Gary R. Steffy. Van Nostrand Reinhold, 1995.
Lua MLA (8ú heag.)STEFFY, Gary R. Lighting Electronic Office Gary R. Steffy. Van Nostrand Reinhold, 1995.
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