APA
Gray L. S., . (2000). PRACTICE MAKES PERFECT IDIOMATIC ENGLISH. United States Of America: McGraw - Hill.
Chicago
Gray Loretta S, . 2000. PRACTICE MAKES PERFECT IDIOMATIC ENGLISH. United States Of America: McGraw - Hill.
Harvard
Gray L. S., . (2000). PRACTICE MAKES PERFECT IDIOMATIC ENGLISH. United States Of America: McGraw - Hill.
MLA
Gray Loretta S, . PRACTICE MAKES PERFECT IDIOMATIC ENGLISH. United States Of America: McGraw - Hill. 2000.