एपीए उद्धरण

Lougheed, L. (2014). Essential words for the IELTS. New York: Barron's Educational Series, Inc.

शिकागो स्टाइल उद्धरण

Lougheed, Lin. Essential Words for the IELTS. New York: Barron's Educational Series, Inc, 2014.

एमएलए उद्धरण

Lougheed, Lin. Essential Words for the IELTS. New York: Barron's Educational Series, Inc, 2014.