Gaya APA
Promunciation practice. (2007).
Malang:
Gloria Offset.
Gaya Chicago
Promunciation practice.
.
Malang:
Gloria Offset,
2007.
Text.
Gaya MLA
Promunciation practice.
.
Malang:
Gloria Offset,
2007.
Text.
Gaya Turabian
Promunciation practice.
Malang:
Gloria Offset,
2007.
Print.