Gaya APA
Electone study, step 2. ([s.a.]).
[s.l.]:
Yamaha Music Foundation.
Gaya Chicago
Electone study, step 2.
.
[s.l.]:
Yamaha Music Foundation,
[s.a.].
.
Gaya MLA
Electone study, step 2.
.
[s.l.]:
Yamaha Music Foundation,
[s.a.].
.
Gaya Turabian
Electone study, step 2.
[s.l.]:
Yamaha Music Foundation,
[s.a.].
.