APA
Singhal P.C, Bali S.P, . (1991). Electrical and Mechanical Engineering. New Delhi: Tata Publishing Co., NewDelhi.
Chicago
Singhal P.C, Bali S.P, . 1991. Electrical and Mechanical Engineering. New Delhi: Tata Publishing Co., NewDelhi.
Harvard
Singhal P.C, Bali S.P, . (1991). Electrical and Mechanical Engineering. New Delhi: Tata Publishing Co., NewDelhi.
MLA
Singhal P.C, Bali S.P, . Electrical and Mechanical Engineering. New Delhi: Tata Publishing Co., NewDelhi. 1991.