APA引文

Bryn O'Callaghan. (1999). An illustrated history of the USA. Essex, UK: Longman.

Trích dẫn kiểu Chicago

Bryn O'Callaghan. An Illustrated History of the USA. Essex, UK: Longman, 1999.

MLA引文

Bryn O'Callaghan. An Illustrated History of the USA. Essex, UK: Longman, 1999.

警告：这些引文格式不一定是100％准确.