Collins. (2014). Easy learning English conversation: Book 2. Tổng hợp.
Trích dẫn kiểu ChicagoCollins. Easy Learning English Conversation: Book 2. Tổng hợp, 2014.
MLA引文Collins. Easy Learning English Conversation: Book 2. Tổng hợp, 2014.
警告:这些引文格式不一定是100%准确.