एपीए उद्धरण

Kovacs,Karen. (2011). Speaking for IELTS: English for exams. TPHCM: NXB tổng hợp.

शिकागो स्टाइल उद्धरण

Kovacs,Karen. Speaking for IELTS: English for Exams. TPHCM: NXB tổng hợp, 2011.

एमएलए उद्धरण

Kovacs,Karen. Speaking for IELTS: English for Exams. TPHCM: NXB tổng hợp, 2011.