@book{1167,
	author = {Guo, Zhenhai},
	title = {Principles of reinforced concrete },
	publisher = {Elsevier,},
	year = {2014.},
	address = {Amsterdam :},
	url = {https://books.google.com.pk/books?id=4aY8AwAAQBAJ&dq=Principles+of+reinforced+concrete&hl=en&sa=X&ved=2ahUKEwjM5vK-kMX2AhUtz4UKHSmXCM4Q6AF6BAgHEAI}
}