Isted, G. H. (1990). The best TOEFL workbook. Tokyo: Addison-Wesley Publishers Japan LTD.
Trích dẫn kiểu ChicagoIsted, George H. The Best TOEFL Workbook. Tokyo: Addison-Wesley Publishers Japan LTD, 1990.
MLA引文Isted, George H. The Best TOEFL Workbook. Tokyo: Addison-Wesley Publishers Japan LTD, 1990.
警告:这些引文格式不一定是100%准确.