APA-čujuhus (7. p.)
Walker, M. (2013). Happy-people-pills for all. Wiley-Blackwell.
Chicago-čujuhus (17. p.)
Walker, Mark. Happy-people-pills for All. Chichester, West Sussex, U.K.: Wiley-Blackwell, 2013.
MLA-čujuhus (9. p.)
Walker, Mark. Happy-people-pills for All. Wiley-Blackwell, 2013.
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