Keller, D. P. (1987). Interactions I: A speaking activities book. United States: Macmillan Pub Co.
Trích dẫn kiểu ChicagoKeller, Deborah Poole. Interactions I: A Speaking Activities Book. United States: Macmillan Pub Co, 1987.
MLA引文Keller, Deborah Poole. Interactions I: A Speaking Activities Book. United States: Macmillan Pub Co, 1987.
警告:这些引文格式不一定是100%准确.