Whitby N. Norman. (2006). Business Benchmark. Pre-Intermediate to Intermediate: Student's Book. Cambridge, Cambridge University Press, 2006.
芝加哥风格引文Whitby N. Norman. Business Benchmark. Pre-Intermediate to Intermediate: Student's Book. Cambridge, Cambridge University Press, 2006, 2006.
MLA引文Whitby N. Norman. Business Benchmark. Pre-Intermediate to Intermediate: Student's Book. Cambridge, Cambridge University Press, 2006, 2006.
警告：这些引文格式不一定是100％准确.