Gaya APA

Ahmad, , Z, A. (1990). Stability of Underground Excavations Under Rock Mass for Menora-Meru Tunnel in Ipoh-Changkat Jering Toll Expressway . : REAAA.

Gaya MLA

Ahmad, , Zainal, A.. "Stability of Underground Excavations Under Rock Mass for Menora-Meru Tunnel in Ipoh-Changkat Jering Toll Expressway". : REAAA, 1990. Computer Software.