Weekley, D., & Weekley, N. A. (1997). Piano together: One piano four hands : level one. Neil A. Kjos Music.
Citace podle Chicago (17th ed.)Weekley, Dallas, a Nancy Arganbright Weekley. Piano Together: One Piano Four Hands : Level One. San Diego, Calif: Neil A. Kjos Music, 1997.
Citace podle MLA (9th ed.)Weekley, Dallas, a Nancy Arganbright Weekley. Piano Together: One Piano Four Hands : Level One. Neil A. Kjos Music, 1997.
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