Gaya APA
Fromers Norway. (2009).
new jersey:
Wiley Publishing.
Gaya Chicago
Fromers Norway.
Ed.4.
new jersey:
Wiley Publishing,
2009.
.
Gaya MLA
Fromers Norway.
Ed.4.
new jersey:
Wiley Publishing,
2009.
.
Gaya Turabian
Fromers Norway.
new jersey:
Wiley Publishing,
2009.
.