APA引文

Vanessa Jakeman. (2004). step up to IELTS. New York: Cambridge University Press.

Trích dẫn kiểu Chicago

Vanessa Jakeman. Step Up to IELTS. New York: Cambridge University Press, 2004.

MLA引文

Vanessa Jakeman. Step Up to IELTS. New York: Cambridge University Press, 2004.

警告：這些引文格式不一定是100％准確.