International Bank for Reconstruction and Development, United Nations Environment Programme, Ahmad, Y. J., El Serafy, S., & Lutz, E. (1989). Environmental accounting for sustainable development /edited by Yusuf J. Ahmad, Salah El Serafy, Ernst Lutz. World Bank.
Chicago (17e ed.) BronvermeldingInternational Bank for Reconstruction and Development, United Nations Environment Programme, Yusuf J. Ahmad, Salah El Serafy, en Ernst Lutz. Environmental Accounting for Sustainable Development /edited by Yusuf J. Ahmad, Salah El Serafy, Ernst Lutz. Washington, D.C: World Bank, 1989.
MLA (9e ed.) BronvermeldingInternational Bank for Reconstruction and Development, et al. Environmental Accounting for Sustainable Development /edited by Yusuf J. Ahmad, Salah El Serafy, Ernst Lutz. World Bank, 1989.