Gough, C. (2010). IELTS target 5.0: Leading to IELTS Academic. Garnet Education.
芝加哥风格引文Gough, Chris. IELTS Target 5.0: Leading to IELTS Academic. London: Garnet Education, 2010.
MLA引文Gough, Chris. IELTS Target 5.0: Leading to IELTS Academic. Garnet Education, 2010.
警告：这些引文格式不一定是100％准确.