Keefer, R. F. (2000). Handbook of soils for landscape architects. Oxford University.
Čikaški stil citiranjaKeefer, Robert F. Handbook of Soils for Landscape Architects. New York: Oxford University, 2000.
MLA način citiranjaKeefer, Robert F. Handbook of Soils for Landscape Architects. Oxford University, 2000.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.