(1993). Kerr's cost data for landscape construction: Unit prices for site development (13th ed.). Van Nostrand Reinhold.
Chicago-referens (17:e uppl.)Kerr's Cost Data for Landscape Construction: Unit Prices for Site Development. 13th ed. New York: Van Nostrand Reinhold, 1993.
MLA-referens (9:e uppl.)Kerr's Cost Data for Landscape Construction: Unit Prices for Site Development. 13th ed. Van Nostrand Reinhold, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.