APA (7th ed.) Citation

Uppsala universitet, World Health Organization, & Levi, L. (1987). Old age. Oxford University Press.

Chicago Style (17th ed.) Citation

Uppsala universitet, World Health Organization, and Lennart Levi. Old Age. Oxford [Oxfordshire] ; New York: Oxford University Press, 1987.

MLA (9th ed.) Citation

Uppsala universitet, et al. Old Age. Oxford University Press, 1987.