APA (7th ed.) Citation

Alter. (1999). Essential English usage & grammar 2. Times Educational.

Chicago Style (17th ed.) Citation

Alter. Essential English Usage & Grammar 2. Singapore: Times Educational, 1999.

MLA (8th ed.) Citation

Alter. Essential English Usage & Grammar 2. Times Educational, 1999.

Warning: These citations may not always be 100% accurate.