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Lua i Stíl Chicago (17ú heag.)Nilles, Ma. Lourdes D., agus Windell L. Rivera. Morphological Characterization and Phylogenetic Analysis of Balantidium Coli Isolated in the Philippines. Quezon City: Institute of Biology, College of Science, University of the Philippines Diliman, 2009.
Lua MLA (9ú heag.)Nilles, Ma. Lourdes D., agus Windell L. Rivera. Morphological Characterization and Phylogenetic Analysis of Balantidium Coli Isolated in the Philippines. Institute of Biology, College of Science, University of the Philippines Diliman, 2009.