Gaya APA
Harmony in practice. (2005).
London:
ABRSM (Royal School of Music).
Gaya Chicago
Harmony in practice.
~.
London:
ABRSM (Royal School of Music),
2005.
Buku.
Gaya MLA
Harmony in practice.
~.
London:
ABRSM (Royal School of Music),
2005.
Buku.
Gaya Turabian
Harmony in practice.
London:
ABRSM (Royal School of Music),
2005.
Buku.