Lua APA (7ú heag.)

AWAD ELIAS M. (1987). SYSTEM ALALYSIS AND DESIGN (2.). GALGOTIA.

Lua i Stíl Chicago (17ú heag.)

AWAD ELIAS M. SYSTEM ALALYSIS AND DESIGN. 2. NEW DELHI: GALGOTIA, 1987.

Lua MLA (9ú heag.)

AWAD ELIAS M. SYSTEM ALALYSIS AND DESIGN. 2. GALGOTIA, 1987.

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