Chopra Sheetal & Taneja Akash. (2009). Patent Agent Examination (1st.). LexisNexis Butterworths.
芝加哥风格引文Chopra Sheetal & Taneja Akash. Patent Agent Examination. 1st. Haryana: LexisNexis Butterworths, 2009.
MLA引文Chopra Sheetal & Taneja Akash. Patent Agent Examination. 1st. LexisNexis Butterworths, 2009.
警告：这些引文格式不一定是100％准确.