Timpog, R. T., & Tharayil, D. P. (2010). An exploratory study of the attitudes of lower elementary school & high school students toward aeta's lifestyle progression. University of the Philippines Diliman Extension Program in Pampanga.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Timpog, Riyalyn T., و Davis P. Tharayil. An Exploratory Study of the Attitudes of Lower Elementary School & High School Students Toward Aeta's Lifestyle Progression. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Timpog, Riyalyn T., و Davis P. Tharayil. An Exploratory Study of the Attitudes of Lower Elementary School & High School Students Toward Aeta's Lifestyle Progression. University of the Philippines Diliman Extension Program in Pampanga, 2010.