APA aipamena

(1999). UPSC (IES) Engineering Services Examination Papers: Solved and Unsolved in General Studies. G.K.

Chicago Style aipamena

UPSC (IES) Engineering Services Examination Papers: Solved and Unsolved in General Studies. Jabalpur: G.K, 1999.

MLA aipamena

UPSC (IES) Engineering Services Examination Papers: Solved and Unsolved in General Studies. G.K, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.