APA引文

Singh,B. (2019). General Studies 2019 For UPSC,SSC etc. NE.

Chicago Style (17th ed.) Citation

Singh,B. General Studies 2019 For UPSC,SSC Etc. New Delhi: NE, 2019.

MLA引文

Singh,B. General Studies 2019 For UPSC,SSC Etc. NE, 2019.

警告：這些引文格式不一定是100％准確.