Gaya APA
Worlds richest men (Back to school). (2009).
:
Emperor edutainment.
Gaya Chicago
Worlds richest men (Back to school).
.
:
Emperor edutainment,
2009.
.
Gaya MLA
Worlds richest men (Back to school).
.
:
Emperor edutainment,
2009.
.
Gaya Turabian
Worlds richest men (Back to school).
:
Emperor edutainment,
2009.
.