Lua APA (7ú heag.)

DANIELS , A. (1986). BASIC SYSTEM ANALYSIS. GALGOTIA PUB. PVT. LTD.

Lua i Stíl Chicago (17ú heag.)

DANIELS , A.,YEATES. BASIC SYSTEM ANALYSIS. GALGOTIA PUB. PVT. LTD, 1986.

Lua MLA (9ú heag.)

DANIELS , A.,YEATES. BASIC SYSTEM ANALYSIS. GALGOTIA PUB. PVT. LTD, 1986.

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