Trích dẫn APA

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

Trích dẫn kiểu Chicago

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

Trích dẫn MLA

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

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.