Gaya APA
School
.
().
Belgium:
Yoyo Books.
Gaya Chicago
School
.
.
Belgium:
Yoyo Books,
.
Text.
Gaya MLA
School
.
.
Belgium:
Yoyo Books,
.
Text.
Gaya Turabian
School
.
Belgium:
Yoyo Books,
.
Print.