APA Style
Cockburn, Andrew, Heller, Robert. ().
Bill Gates .
:
.
Chicago Style
Cockburn, Andrew, Heller, Robert.
Bill Gates.
:
,
.
.
MLA Style
Cockburn, Andrew, Heller, Robert.
Bill Gates.
:
,
.
.
Turabian Style
Cockburn, Andrew, Heller, Robert.
Bill Gates.
:
,
.
.