Christy, V. A. Expressive singing song anthology (2nd ed. ; medium voice ed.).
芝加哥风格引文Christy, Van A. Expressive Singing Song Anthology. 2nd ed. ; medium voice ed.
MLA引文Christy, Van A. Expressive Singing Song Anthology. 2nd ed. ; medium voice ed.
警告：这些引文格式不一定是100％准确.