Harrison, M. (2012). Complete IELTS: Bands 5-6.5 : Workbook with Answers. Cambridge University Press.
芝加哥风格引文Harrison, Mark. Complete IELTS: Bands 5-6.5 : Workbook with Answers. Cambridge: Cambridge University Press, 2012.
MLA引文Harrison, Mark. Complete IELTS: Bands 5-6.5 : Workbook with Answers. Cambridge University Press, 2012.
警告：这些引文格式不一定是100％准确.