(2004). What do you know about British & American English: Understand the main differences between British and American English. Singapore: Learners Publishing.
Trích dẫn kiểu ChicagoWhat Do You Know About British & American English: Understand the Main Differences between British and American English. Singapore: Learners Publishing, 2004.
Trích dẫn MLAWhat Do You Know About British & American English: Understand the Main Differences between British and American English. Singapore: Learners Publishing, 2004.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.