APA (7th ed.) Citation

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 (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.