APA Style

Lougheed, Lin. (2016). IELTS (international english language testing system) (Ed. 4th). New York: Barron's Educational Series.

Chicago Style

Lougheed, Lin. IELTS (international english language testing system). Ed. 4th New York: Barron's Educational Series, 2016. Text.

MLA Style

Lougheed, Lin. IELTS (international english language testing system). Ed. 4th New York: Barron's Educational Series, 2016. Text.

Turabian Style

Lougheed, Lin. IELTS (international english language testing system). Ed. 4th New York: Barron's Educational Series, 2016. Print.