Soewito M, D. (1992). Teknik termudah bermain organ: Natural C. mayor r A. minor. Titik Terang.
Chicago Style (17th ed.) CitationSoewito M, DS. Teknik Termudah Bermain Organ: Natural C. Mayor R A. Minor. Titik Terang, 1992.
MLA (8th ed.) CitationSoewito M, DS. Teknik Termudah Bermain Organ: Natural C. Mayor R A. Minor. Titik Terang, 1992.
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