Ketzner, K. (1977). The Language of the World. Routledge & Kegan Paul.
Čikaški stil citiranjaKetzner, Kenneth. The Language of the World. London: Routledge & Kegan Paul, 1977.
MLA način citiranjaKetzner, Kenneth. The Language of the World. Routledge & Kegan Paul, 1977.
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