Lua APA (7ú heag.)

(2005). Model commercial contracts and lettersCentral chambers law corporation. Thomson.

Lua i Stíl Chicago (17ú heag.)

Model Commercial Contracts and LettersCentral Chambers Law Corporation. Thomson, 2005.

Lua MLA (8ú heag.)

Model Commercial Contracts and LettersCentral Chambers Law Corporation. Thomson, 2005.

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