Elyasi, H. (1993). Different levels of development and its role in technology. Sharif Journal of Mechanical Engineering, 9(4), 19-21.

Elyasi, H. "Different levels of development and its role in technology", Sharif Journal of Mechanical Engineering, 9, 4, 1993, 19-21.

Elyasi H. (1993). 'Different levels of development and its role in technology', Sharif Journal of Mechanical Engineering, 9(4), pp. 19-21.

H. Elyasi, "Different levels of development and its role in technology," Sharif Journal of Mechanical Engineering, 9 4 (1993): 19-21,

Elyasi H. Different levels of development and its role in technology. Sharif Journal of Mechanical Engineering. 1993;9(4):19-21 (In Persian).