Nones, M. C. A., & Ravina, M. C. V. (1992). Theme abstraction through semantic correlation. College of Arts and Letters, University of the Philippines Diliman.
Chicago-referens (17:e uppl.)Nones, Maria Cecilia A., och Ma. Clara V. Ravina. Theme Abstraction Through Semantic Correlation. Quezon City: College of Arts and Letters, University of the Philippines Diliman, 1992.
MLA-referens (9:e uppl.)Nones, Maria Cecilia A., och Ma. Clara V. Ravina. Theme Abstraction Through Semantic Correlation. College of Arts and Letters, University of the Philippines Diliman, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.