APA引文

Chopra, J. K. General knowledge national & international: For UPSC Civil services preliminary examination & All State Public Service Commission examinations. Unique Publishers (I) pvt. Ltd..

Chicago Edition Citation

Chopra, J. K. General Knowledge National & International: For UPSC Civil Services Preliminary Examination & All State Public Service Commission Examinations. Delhi: Unique Publishers (I) pvt. Ltd..

MLA引文

Chopra, J. K. General Knowledge National & International: For UPSC Civil Services Preliminary Examination & All State Public Service Commission Examinations. Unique Publishers (I) pvt. Ltd..

警告：這些引文格式不一定是100％准確.