Downing, A., & Locke, P. (2002). A university course in English grammar. Routledge.
Čikaški stil citiranja (17. izdanje)Downing, Angela, i Philip Locke. A University Course in English Grammar. London: Routledge, 2002.
MLA način citiranja (8. izdanje)Downing, Angela, i Philip Locke. A University Course in English Grammar. Routledge, 2002.
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