Concone, G. Fifty lessons for the voice. New York: G.schirmer, Tnc.
Trích dẫn kiểu ChicagoConcone, G. Fifty Lessons for the Voice. New York: G.schirmer, Tnc.
MLA引文Concone, G. Fifty Lessons for the Voice. New York: G.schirmer, Tnc.
警告：这些引文格式不一定是100％准确.