Carballo, J. L. O. (1983). The Values and attitudes of selected college students on some topics relevant human to population: Jose Luis O. Carballo ... [et.al.]. Science Education Center, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Carballo, Jose Luis O. The Values and Attitudes of Selected College Students on Some Topics Relevant Human to Population: Jose Luis O. Carballo ... [et.al.]. Quezon City: Science Education Center, University of the Philippines, 1983.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Carballo, Jose Luis O. The Values and Attitudes of Selected College Students on Some Topics Relevant Human to Population: Jose Luis O. Carballo ... [et.al.]. Science Education Center, University of the Philippines, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.