Philippines (Republic) Department of Agriculture and Natural Resources, Mariano, J. A., Romero, I. A., & Tingzon, J. A. (1954). Soil survey of Ilocos Sur Province, Philippines. Bureau of Printing.
Chicago Style (17th ed.) CitationPhilippines (Republic) Department of Agriculture and Natural Resources, Juan A. Mariano, Isidoro A. Romero, and Jorge A. Tingzon. Soil Survey of Ilocos Sur Province, Philippines. Manila: Bureau of Printing, 1954.
MLA (9th ed.) CitationPhilippines (Republic) Department of Agriculture and Natural Resources, et al. Soil Survey of Ilocos Sur Province, Philippines. Bureau of Printing, 1954.
Warning: These citations may not always be 100% accurate.