(2002). The ELT grammar book: A teacher-friendly reference guide / Richard Firsten, with Patricia Killian.
Chicago Style (17. basım) AtıfThe ELT Grammar Book: A Teacher-friendly Reference Guide / Richard Firsten, with Patricia Killian. 2002.
MLA (9th ed.) AtıfThe ELT Grammar Book: A Teacher-friendly Reference Guide / Richard Firsten, with Patricia Killian. 2002.
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