APA引文

Guffey, M. E. (1999). Business English (6th ed.). Cincinnati, Ohio: South-Western College.

Trích dẫn kiểu Chicago

Guffey, Mary Ellen. Business English. 6th ed. Cincinnati, Ohio: South-Western College, 1999.

MLA引文

Guffey, Mary Ellen. Business English. 6th ed. Cincinnati, Ohio: South-Western College, 1999.

警告：这些引文格式不一定是100％准确.