Philippines (Commonwealth) Dept. of Agriculture and Commerce. (1977). Land resources of the Philippines [microform]. Photoduplication Service, University of the Philippines Library.
Chicagoスタイル(17版)引用形式Philippines (Commonwealth) Dept. of Agriculture and Commerce. Land Resources of the Philippines [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
MLA(9版)引用形式Philippines (Commonwealth) Dept. of Agriculture and Commerce. Land Resources of the Philippines [microform]. Photoduplication Service, University of the Philippines Library, 1977.
警告: この引用は必ずしも正確ではありません.