Philippines. Bureau of Soils. Soil map: Tarlac province. Bureau of Soils.
Čikaški stil citiranja (17. izdanje)Philippines. Bureau of Soils. Soil Map: Tarlac Province. Manila: Bureau of Soils.
MLA način citiranja (9. izdanje)Philippines. Bureau of Soils. Soil Map: Tarlac Province. Bureau of Soils.
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