APA (7th ed.) Citation
ebrary, Inc, & Vocalis Ltd. (2001). The grammar cracker: Unlocking English grammar. Vocalis, Ltd..
Chicago Style (17th ed.) Citation
ebrary, Inc, and Vocalis Ltd. The Grammar Cracker: Unlocking English Grammar. [Cambridge, England]: Vocalis, Ltd., 2001.
MLA (9th ed.) Citation
ebrary, Inc, and Vocalis Ltd. The Grammar Cracker: Unlocking English Grammar. Vocalis, Ltd., 2001.
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