National Academy of Science and Technology, Philippines. (2006). Maximizing the quality of life of the elderly through better health. National Academy of Science and Technology, Philippines, Department of Science and Technology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Academy of Science and Technology, Philippines. Maximizing the Quality of Life of the Elderly Through Better Health. Taguig City, Metro Manila: National Academy of Science and Technology, Philippines, Department of Science and Technology, 2006.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Academy of Science and Technology, Philippines. Maximizing the Quality of Life of the Elderly Through Better Health. National Academy of Science and Technology, Philippines, Department of Science and Technology, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.