एपीए उद्धरण

Scovell, D., Knobel, M., & Pastellas, V. (2007). 404 essential tests for IELTS: Academic module. Tp. Hồ Chí Minh: Tổng hợp.

शिकागो स्टाइल उद्धरण

Scovell, Donna., Max Knobel, और Vickie Pastellas. 404 Essential Tests for IELTS: Academic Module. Tp. Hồ Chí Minh: Tổng hợp, 2007.

एमएलए उद्धरण

Scovell, Donna., Max Knobel, और Vickie Pastellas. 404 Essential Tests for IELTS: Academic Module. Tp. Hồ Chí Minh: Tổng hợp, 2007.