APA-čujuhus (7. p.)
Excerpta medica. Section 20, Gerontology and geriatrics [Excerpta Medica 20 Gerontol Geriatr] NLMUID: 0200321.
Chicago-čujuhus (17. p.)
Excerpta Medica. Section 20, Gerontology and Geriatrics [Excerpta Medica 20 Gerontol Geriatr] NLMUID: 0200321.
MLA-čujuhus (9. p.)
Excerpta Medica. Section 20, Gerontology and Geriatrics [Excerpta Medica 20 Gerontol Geriatr] NLMUID: 0200321.
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