ABRAMS, W. B. (2013). The merck manual geriatrics jilid 1. Binarupa Aksara.
Lua i Stíl Chicago (17ú heag.)ABRAMS, William B. The Merck Manual Geriatrics Jilid 1. Binarupa Aksara, 2013.
Lua MLA (9ú heag.)ABRAMS, William B. The Merck Manual Geriatrics Jilid 1. Binarupa Aksara, 2013.
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