Ibbotson, M. (2009). Professional English in use: Engineering. Technical English for professionals. Cambridge University Press.
Citace podle Chicago (17th ed.)Ibbotson, Mark. Professional English in Use: Engineering. Technical English for Professionals. Cambridge: Cambridge University Press, 2009.
Citace podle MLA (9th ed.)Ibbotson, Mark. Professional English in Use: Engineering. Technical English for Professionals. Cambridge University Press, 2009.
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