Gregorio, H. C., & Gregorio, C. M. (1979). Philosophy of education in Philippine setting. R.P. Garcia Publishing.
Chicago-viite (17. p.)Gregorio, Herman Cruz, ja Cornelia M. Gregorio. Philosophy of Education in Philippine Setting. Quezon City: R.P. Garcia Publishing, 1979.
MLA-viite (9. p.)Gregorio, Herman Cruz, ja Cornelia M. Gregorio. Philosophy of Education in Philippine Setting. R.P. Garcia Publishing, 1979.
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