CRIMMINS, E. M., HAYWARD, M. D., HAGEDORN, A., SAITO, Y., & BROUARD, N. (2009). Change in Disability-Free Life Expectancy for Americans 70 Years Old and Older. Population Association of America.
শিকাগো স্টাইলে সাইটেশনCRIMMINS, EILEEN M., MARK D. HAYWARD, AARON HAGEDORN, YASUHIKO SAITO, এবং NICOLAS BROUARD. Change in Disability-Free Life Expectancy for Americans 70 Years Old and Older. Population Association of America, 2009.
এমএলএ সাইটেশনCRIMMINS, EILEEN M., et al. Change in Disability-Free Life Expectancy for Americans 70 Years Old and Older. Population Association of America, 2009.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.