Richardson, K. (2009). English for Law Enforcement: Teacher's Book. Macmillan.
Chicago-Zitierstil (17. Ausg.)Richardson, Karen. English for Law Enforcement: Teacher's Book. Oxford: Macmillan, 2009.
MLA-Zitierstil (8. Ausg.)Richardson, Karen. English for Law Enforcement: Teacher's Book. Macmillan, 2009.
警告：這些引文格式不一定是100％准確.