APA

Ahmad Y. J., El Serafy S., Lutz E., El Serafy S. & Lutz E. (1989). Environmental accounting for sustainable development. Washington: World Bank.

Chicago

Ahmad Yusuf J, El Serafy Salah, Lutz Ernst, El Serafy Salah and Lutz Ernst. 1989. Environmental accounting for sustainable development. Washington: World Bank.

Harvard

Ahmad Y. J., El Serafy S., Lutz E., El Serafy S. and Lutz E. (1989). Environmental accounting for sustainable development. Washington: World Bank.

MLA

Ahmad Yusuf J, El Serafy Salah, Lutz Ernst, El Serafy Salah and Lutz Ernst. Environmental accounting for sustainable development. Washington: World Bank. 1989.