APA-viite (7. p.)
Birkland, J. L. H. (2019). Gerontechnology: Understanding older adult information and communication technology use. Emerald Publishing Limited.
Chicago-viite (17. p.)
Birkland, Johanna L. H. Gerontechnology: Understanding Older Adult Information and Communication Technology Use. Bingley, U.K.: Emerald Publishing Limited, 2019.
MLA-viite (9. p.)
Birkland, Johanna L. H. Gerontechnology: Understanding Older Adult Information and Communication Technology Use. Emerald Publishing Limited, 2019.
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