Whitney, N., & Norman Whitney; David McKeegan. (1998). Open house: Student book. New York: Oxford University Press.
Čikaški stil citiranjaWhitney, Norman, i Norman Whitney; David McKeegan. Open House: Student Book. New York: Oxford University Press, 1998.
MLA način citiranjaWhitney, Norman, i Norman Whitney; David McKeegan. Open House: Student Book. New York: Oxford University Press, 1998.
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