APA-čujuhus (7. p.)
Klima, E. S., & Bellugi, U. (1979). The signs of language. Harvard University Press.
Chicago-čujuhus (17. p.)
Klima, Edward S., juo Ursula Bellugi. The Signs of Language. Londres, Inglaterra: Harvard University Press, 1979.
MLA-čujuhus (9. p.)
Klima, Edward S., juo Ursula Bellugi. The Signs of Language. Harvard University Press, 1979.
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