DOFF, A., & BECKET, C. (1993). Listening 1. Canbridge University Press.
芝加哥风格引文DOFF, Adrian, 与 Carolyn BECKET. Listening 1. New York: Canbridge University Press, 1993.
MLA引文DOFF, Adrian, 与 Carolyn BECKET. Listening 1. Canbridge University Press, 1993.
警告：这些引文格式不一定是100％准确.