APA引文

Williams, A. (2012). Vocabulary for IELTS. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Williams, Anneli. Vocabulary for IELTS. London: HarperCollins Publishers, 2012.

MLA引文

Williams, Anneli. Vocabulary for IELTS. HarperCollins Publishers, 2012.

警告：這些引文格式不一定是100％准確.