APA (7e ed.) Bronvermelding

(2007). Practical English usage: English as a second language. Times Educational.

Chicago (17e ed.) Bronvermelding

Practical English Usage: English as a Second Language. Selangor: Times Educational, 2007.

MLA (9e ed.) Bronvermelding

Practical English Usage: English as a Second Language. Times Educational, 2007.

Let op: Deze citaties zijn niet altijd 100% accuraat.