Sagaral, E. d. G. (1977). Chemical weed control in direct-seeded rice [microform]. Photoduplication Service. University of the Philippines Library.
Citace podle Chicago (17th ed.)Sagaral, Erasmo de Guia. Chemical Weed Control in Direct-seeded Rice [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Citace podle MLA (9th ed.)Sagaral, Erasmo de Guia. Chemical Weed Control in Direct-seeded Rice [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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