Cita APA (7a ed.)

Cullen, P. (2008). Vocabulary for IELTS with answers: Self-study vocabulary practice. Cambridge University Press.

Cita Chicago Style (17a ed.)

Cullen, Pauline. Vocabulary for IELTS with Answers: Self-study Vocabulary Practice. New York: Cambridge University Press, 2008.

Cita MLA (9a ed.)

Cullen, Pauline. Vocabulary for IELTS with Answers: Self-study Vocabulary Practice. Cambridge University Press, 2008.