Denman, B. R. (2007). Step language for everyday life forward 4. New York: Oxford University Press.
Trích dẫn kiểu ChicagoDenman, Barbara R. Step Language for Everyday Life Forward 4. New York: Oxford University Press, 2007.
MLA引文Denman, Barbara R. Step Language for Everyday Life Forward 4. New York: Oxford University Press, 2007.
警告:這些引文格式不一定是100%准確.