Okafor, L. I. (1977). Perennial nutsedge (Cyperus rotundus L.) competition with upland rice and its chemical control [microform]. Photoduplication Service, University of the Philippines Library.
Citace podle Chicago (17th ed.)Okafor, Lewis Ikechukwa. Perennial Nutsedge (Cyperus Rotundus L.) Competition with Upland Rice and Its Chemical Control [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
Citace podle MLA (9th ed.)Okafor, Lewis Ikechukwa. Perennial Nutsedge (Cyperus Rotundus L.) Competition with Upland Rice and Its Chemical Control [microform]. Photoduplication Service, University of the Philippines Library, 1977.
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