Waal, K. J. A. d. (1987). Environmental technology: Proceedings of the second European Conference on Environmental Technology, Amsterdam, The Netherlands, june 22 - 26, 1987. Nijhoff.
Chicago-Zitierstil (17. Ausg.)Waal, K. J. A. de. Environmental Technology: Proceedings of the Second European Conference on Environmental Technology, Amsterdam, The Netherlands, June 22 - 26, 1987. Dordrecht [u.a.]: Nijhoff, 1987.
MLA-Zitierstil (9. Ausg.)Waal, K. J. A. de. Environmental Technology: Proceedings of the Second European Conference on Environmental Technology, Amsterdam, The Netherlands, June 22 - 26, 1987. Nijhoff, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.