Goetschius, P. (1938). Exercise in elementary counterpoint. G. Schirmer, Inc..
芝加哥风格引文Goetschius, Percy. Exercise in Elementary Counterpoint. New York: G. Schirmer, Inc., 1938.
MLA引文Goetschius, Percy. Exercise in Elementary Counterpoint. G. Schirmer, Inc., 1938.
警告：这些引文格式不一定是100％准确.