APA
Vilization modbrn technology and sustainable development, El-Gammal H., Lefebvre L. A. & Vilization modbrn technology and sustainable development. (1999). Vilization modbrn technology and sustainable development. Cairo: [s.n].
Chicago
Vilization modbrn technology and sustainable development, El-Gammal Hussein, Lefebvre Louis A and Vilization modbrn technology and sustainable development. 1999. Vilization modbrn technology and sustainable development. Cairo: [s.n].
Harvard
Vilization modbrn technology and sustainable development, El-Gammal H., Lefebvre L. A. and Vilization modbrn technology and sustainable development. (1999). Vilization modbrn technology and sustainable development. Cairo: [s.n].
MLA
Vilization modbrn technology and sustainable development, El-Gammal Hussein, Lefebvre Louis A and Vilization modbrn technology and sustainable development. Vilization modbrn technology and sustainable development. Cairo: [s.n]. 1999.