APA-čujuhus (7. p.)
König, K., Weick, F., & Wink, M. (2008). Owls of the world (2nd ed.). Christopher Helm.
Chicago-čujuhus (17. p.)
König, Klaus, Friedhelm Weick, juo Michael Wink. Owls of the World. 2nd ed. London: Christopher Helm, 2008.
MLA-čujuhus (9. p.)
König, Klaus, et al. Owls of the World. 2nd ed. Christopher Helm, 2008.
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