Weiss, A. S. (1998). Unnatural horizons: Paradox and contradiction in landscape architecture. Princeton Architectural Press.
Chicago-referens (17:e uppl.)Weiss, Allen S. Unnatural Horizons: Paradox and Contradiction in Landscape Architecture. New York: Princeton Architectural Press, 1998.
MLA-referens (9:e uppl.)Weiss, Allen S. Unnatural Horizons: Paradox and Contradiction in Landscape Architecture. Princeton Architectural Press, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.