एपीए उद्धरण

Kovacs, K. (2012). English for Exams Speaking for Ielts. Nhân Trí Việt.

शिकागो स्टाइल उद्धरण

Kovacs, Karen. English for Exams Speaking for Ielts. Nhân Trí Việt, 2012.

एमएलए उद्धरण

Kovacs, Karen. English for Exams Speaking for Ielts. Nhân Trí Việt, 2012.