Trích dẫn APA

Williams, J. 21 Century Communication: Listening, Speaking, and Critical Thinking / Jessica Williams. Cengage Learning Asia PTE LTD.

Trích dẫn kiểu Chicago

Williams, Jessica. 21 Century Communication: Listening, Speaking, and Critical Thinking / Jessica Williams. Cengage Learning Asia PTE LTD.

Trích dẫn MLA

Williams, Jessica. 21 Century Communication: Listening, Speaking, and Critical Thinking / Jessica Williams. Cengage Learning Asia PTE LTD.

Cảnh báo! Những trích dẫn này có thể không chính xác 100%.