Bonner, M. (1994). Focus on grammar. Teacher's manual. An intermediate course for reference and practice. Addison-Wesley.
Citace podle Chicago (17th ed.)Bonner, Margaret. Focus on Grammar. Teacher's Manual. An Intermediate Course for Reference and Practice. Reading: Addison-Wesley, 1994.
Citace podle MLA (9th ed.)Bonner, Margaret. Focus on Grammar. Teacher's Manual. An Intermediate Course for Reference and Practice. Addison-Wesley, 1994.
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