Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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