Cita APA

Lougheed, L. (2011). Ielts International English Languages Testing System. Nhân Trí Việt.

Chicago Style Citation

Lougheed, Lin. Ielts International English Languages Testing System. Nhân Trí Việt, 2011.

Cita MLA

Lougheed, Lin. Ielts International English Languages Testing System. Nhân Trí Việt, 2011.

Atenció: Aquestes cites poden no estar 100% correctes.