Ackert, P. (2000). Facts and figures: Basic reading practice with answers. Trẻ.
Trích dẫn kiểu ChicagoAckert, Patricia. Facts and Figures: Basic Reading Practice With Answers. Trẻ, 2000.
MLA引文Ackert, Patricia. Facts and Figures: Basic Reading Practice With Answers. Trẻ, 2000.
警告:这些引文格式不一定是100%准确.