Kotchko,V . (1992). UNESCO and the international response to the gaps.. Sharif Journal of Civil Engineering, vol. 8(3), 20-26.
Kotchko,V . "UNESCO and the international response to the gaps.", Sharif Journal of Civil Engineering, vol. 8, 3, 1992, 20-26.
Kotchko V. (1992). 'UNESCO and the international response to the gaps.', Sharif Journal of Civil Engineering, vol. 8(3), pp. 20-26.
V Kotchko, "UNESCO and the international response to the gaps.," Sharif Journal of Civil Engineering, vol. 8 3 (1992): 20-26,
Kotchko V. UNESCO and the international response to the gaps.. Sharif Journal of Civil Engineering. 1992;vol. 8(3):20-26 (In Persian).
