Gaya APA

UPADHYAY, A., GUPTA, D, L. (2012). Railways, bridges and tunnels . New Delhi: S.K. Kataria & Sons.

Gaya MLA

UPADHYAY, A.K.., GUPTA, D., Lal. "Railways, bridges and tunnels". New Delhi: S.K. Kataria & Sons, 2012. Buku.