(1947). Soil survey of Iloilo province: Republic of the Philippines, Department of Agriculture and Natural Resources. Bureau of Printing.
Chicago-Zitierstil (17. Ausg.)Soil Survey of Iloilo Province: Republic of the Philippines, Department of Agriculture and Natural Resources. Manila: Bureau of Printing, 1947.
MLA-Zitierstil (9. Ausg.)Soil Survey of Iloilo Province: Republic of the Philippines, Department of Agriculture and Natural Resources. Bureau of Printing, 1947.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.