APA
Engineer-in-Chief's Branch, . (2021). Technical Instruction 2021. Rawalpindi: Engineer-in-Chief's Branch GHQ, Rawalpindi.
Chicago
Engineer-in-Chief's Branch, . 2021. Technical Instruction 2021. Rawalpindi: Engineer-in-Chief's Branch GHQ, Rawalpindi.
Harvard
Engineer-in-Chief's Branch, . (2021). Technical Instruction 2021. Rawalpindi: Engineer-in-Chief's Branch GHQ, Rawalpindi.
MLA
Engineer-in-Chief's Branch, . Technical Instruction 2021. Rawalpindi: Engineer-in-Chief's Branch GHQ, Rawalpindi. 2021.