Ojha NN, E. (2016). General studies: IAS mains Q&A. Chrinicle.
Chicago Style aipamenaOjha NN, Ed. General Studies: IAS Mains Q&A. ND: Chrinicle, 2016.
MLA aipamenaOjha NN, Ed. General Studies: IAS Mains Q&A. Chrinicle, 2016.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.