Não informado. (2000). Environment and development. American Planning Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Environment and Development. Chicago, Ill: American Planning Association, 2000.
MLA-Zitierstil (8. Ausg.)Não informado. Environment and Development. American Planning Association, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.