APA引文

Chamot...et.al, A. U. UP close: English for global communication. Heinle and Heinle.

Chicago Style (17th ed.) Citation

Chamot...et.al, Ana Uhl. UP Close: English for Global Communication. Heinle and Heinle.

MLA引文

Chamot...et.al, Ana Uhl. UP Close: English for Global Communication. Heinle and Heinle.

警告：这些引文格式不一定是100％准确.