Butler, S. (1973). Guide to the best in contemporary piano music: An annotated list of graded solo piano music published since 1950. Scarecrow Press.
Chicago Style (17th ed.) CitationButler, Stanley. Guide to the Best in Contemporary Piano Music: An Annotated List of Graded Solo Piano Music Published Since 1950. Metuchen, N.J.: Scarecrow Press, 1973.
MLA (8th ed.) CitationButler, Stanley. Guide to the Best in Contemporary Piano Music: An Annotated List of Graded Solo Piano Music Published Since 1950. Scarecrow Press, 1973.
Warning: These citations may not always be 100% accurate.