APA

Porter R., Cottridge D., . (2000). Aphotographic Guide to Birds of Egypt and the Middle East. Cairo: The American University.

Chicago

Porter Richard, Cottridge David, . 2000. Aphotographic Guide to Birds of Egypt and the Middle East. Cairo: The American University.

Harvard

Porter R., Cottridge D., . (2000). Aphotographic Guide to Birds of Egypt and the Middle East. Cairo: The American University.

MLA

Porter Richard, Cottridge David, . Aphotographic Guide to Birds of Egypt and the Middle East. Cairo: The American University. 2000.