Citace podle APA

Collins. (2013). Work on your grammar (Upper Intermediate B2): Over 200 exercises to improve your English grammar. Tổng hợp.

Styl Chicago

Collins. Work On Your Grammar (Upper Intermediate B2): Over 200 Exercises to Improve Your English Grammar. Tổng hợp, 2013.

Citace podle MLA

Collins. Work On Your Grammar (Upper Intermediate B2): Over 200 Exercises to Improve Your English Grammar. Tổng hợp, 2013.

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