Leader, J. A. (1964). The audio-visual approach to teaching music in the junior high school. Helios Books.
Citace podle Chicago (17th ed.)Leader, J. Albert. The Audio-visual Approach to Teaching Music in the Junior High School. New York: Helios Books, 1964.
Citace podle MLA (9th ed.)Leader, J. Albert. The Audio-visual Approach to Teaching Music in the Junior High School. Helios Books, 1964.
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