Gaya APA
Harris, Michael. (2008).
Challenges (ke-4).
:
england, Pearson Longman.
Gaya Chicago
Harris, Michael.
Challenges.
ke-4
:
england, Pearson Longman,
2008.
.
Gaya MLA
Harris, Michael.
Challenges.
ke-4
:
england, Pearson Longman,
2008.
.
Gaya Turabian
Harris, Michael.
Challenges.
ke-4
:
england, Pearson Longman,
2008.
.