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.

Elyasi, H., "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).