Megino, R. P. (1977). An agricultural economic land classification of northwestern Laguna, 1962 [microform]. Photoduplication Service. University of the Philippines Library.
Cita Chicago (17th ed.)Megino, Rogelio Penalosa. An Agricultural Economic Land Classification of Northwestern Laguna, 1962 [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Cita MLA (9th ed.)Megino, Rogelio Penalosa. An Agricultural Economic Land Classification of Northwestern Laguna, 1962 [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.