APA-čujuhus (7. p.)
Hruschka, D. J. (2010). Friendship: Development, ecology, and evolution of a relationship. University of California Press.
Chicago-čujuhus (17. p.)
Hruschka, Daniel J. Friendship: Development, Ecology, and Evolution of a Relationship. Berkeley: University of California Press, 2010.
MLA-čujuhus (9. p.)
Hruschka, Daniel J. Friendship: Development, Ecology, and Evolution of a Relationship. University of California Press, 2010.
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