Gershwin, G., & Gershwin, I. (1964). What causes that? Alfred Publishing Co., Inc..
Chicago Style (17. basım) AtıfGershwin, George, ve Ira Gershwin. What Causes That? Louisville, United States: Alfred Publishing Co., Inc., 1964.
MLA (9th ed.) AtıfGershwin, George, ve Ira Gershwin. What Causes That? Alfred Publishing Co., Inc., 1964.
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