Zahran, M. M. (1973). Challenges of the urban environment. Beirut Arab University.
Čikaški stil citiranja (17. izdanje)Zahran, Mohsen Moharram. Challenges of the Urban Environment. Beirut: Beirut Arab University, 1973.
MLA način citiranja (9. izdanje)Zahran, Mohsen Moharram. Challenges of the Urban Environment. Beirut Arab University, 1973.
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