Parkin, K. (1969). Ideal voice and speech training: A book of exercises (Rev., with additional material.). S. French.
芝加哥风格引文Parkin, Ken. Ideal Voice and Speech Training: A Book of Exercises. Rev., with additional material. London ; New York: S. French, 1969.
MLA引文Parkin, Ken. Ideal Voice and Speech Training: A Book of Exercises. Rev., with additional material. S. French, 1969.
警告：这些引文格式不一定是100％准确.