Não informado. (1964). Soil and water. National Water and Soil Conservation Organization.
Čikaški stil citiranja (17. izdanje)Não informado. Soil and Water. Wellington: National Water and Soil Conservation Organization, 1964.
MLA način citiranja (8. izdanje)Não informado. Soil and Water. National Water and Soil Conservation Organization, 1964.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.