एपीए उद्धरण

Chopra, S. T. (2009). Patent agent examination. LexisNexis Butterworths.

शिकागो स्टाइल उद्धरण

Chopra, Sheetal Taneja. Patent Agent Examination. Nagpur: LexisNexis Butterworths, 2009.

एमएलए उद्धरण

Chopra, Sheetal Taneja. Patent Agent Examination. LexisNexis Butterworths, 2009.