Dignen, B. For work and life english 365: Student's book 1. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoDignen, Bob. For Work and Life English 365: Student's Book 1. Cambridge: Cambridge University Press.
MLA引文Dignen, Bob. For Work and Life English 365: Student's Book 1. Cambridge: Cambridge University Press.
警告:这些引文格式不一定是100%准确.