John R Boyd. Connections communicative listening and speaking activities. New York: Regents.
Trích dẫn kiểu ChicagoJohn R Boyd. Connections Communicative Listening and Speaking Activities. New York: Regents.
MLA引文John R Boyd. Connections Communicative Listening and Speaking Activities. New York: Regents.
警告：這些引文格式不一定是100％准確.