Lua APA (7ú heag.)

Chopra ,Sheetal. (2013). Patent Agent Examination (3rd ed.). Lexisnexis.

Lua i Stíl Chicago (17ú heag.)

Chopra ,Sheetal. Patent Agent Examination. 3rd ed. Haryana: Lexisnexis, 2013.

Lua MLA (9ú heag.)

Chopra ,Sheetal. Patent Agent Examination. 3rd ed. Lexisnexis, 2013.

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