Diaz, L. E., & Ocampo, D. (2013). Assessment of text difficulty: A model for grades 1-10 Filipino texts. College of Education, University of the Philippines Diliman.
Čikaški stil citiranja (17. izdanje)Diaz, Leonor E., i Dina Ocampo. Assessment of Text Difficulty: A Model for Grades 1-10 Filipino Texts. Quezon City: College of Education, University of the Philippines Diliman, 2013.
MLA način citiranja (9. izdanje)Diaz, Leonor E., i Dina Ocampo. Assessment of Text Difficulty: A Model for Grades 1-10 Filipino Texts. College of Education, University of the Philippines Diliman, 2013.
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