APA
Ahmad Y., Lutz E & El Serafy S. (1989). Environmental Accounting For Sustainable Development. Washigton: World Bank.
Chicago
Ahmad YJ(ed), Lutz E and El Serafy S. 1989. Environmental Accounting For Sustainable Development. Washigton: World Bank.
Harvard
Ahmad Y., Lutz E and El Serafy S. (1989). Environmental Accounting For Sustainable Development. Washigton: World Bank.
MLA
Ahmad YJ(ed), Lutz E and El Serafy S. Environmental Accounting For Sustainable Development. Washigton: World Bank. 1989.