एपीए उद्धरण

Nguyễn Thành Yến. (2011). New TOEIC 4n4: 730 level : Four weeks, for weakness. Tp. HCM: Tổng hợp.

शिकागो स्टाइल उद्धरण

Nguyễn Thành Yến. New TOEIC 4n4: 730 Level : Four Weeks, for Weakness. Tp. HCM: Tổng hợp, 2011.

एमएलए उद्धरण

Nguyễn Thành Yến. New TOEIC 4n4: 730 Level : Four Weeks, for Weakness. Tp. HCM: Tổng hợp, 2011.