Kratzer, A. (2012). Modals and conditionals. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Kratzer, Angelika. Modals and Conditionals. Great Clarendon Street, Oxford: Oxford University Press, 2012.
Lua MLA (9ú heag.)Kratzer, Angelika. Modals and Conditionals. Oxford University Press, 2012.
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