APA (7th ed.) Citation

Sharaf, A. H., & unknown. (1978). Investigation into the modulus of elasticity of concrete.

Chicago Style (17th ed.) Citation

Sharaf, Amin Hussain, and unknown. Investigation into the Modulus of Elasticity of Concrete. 1978.

MLA (9th ed.) Citation

Sharaf, Amin Hussain, and unknown. Investigation into the Modulus of Elasticity of Concrete. 1978.

Warning: These citations may not always be 100% accurate.