Warner, A. R. (1993). English auxiliaries: Structure and history. Cambridge University Press.
Čikaški stil citiranja (17. izdanje)Warner, Anthony R. English Auxiliaries: Structure and History. Cambridge: Cambridge University Press, 1993.
MLA način citiranja (9. izdanje)Warner, Anthony R. English Auxiliaries: Structure and History. Cambridge University Press, 1993.
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