APA Style
Gwartney, James, Lawson, Robert. (2008).
Economic freedom of the world: 2008 annual report .
:
.
Chicago Style
Gwartney, James, Lawson, Robert.
Economic freedom of the world: 2008 annual report.
:
,
2008.
Electronic Resource.
MLA Style
Gwartney, James, Lawson, Robert.
Economic freedom of the world: 2008 annual report.
:
,
2008.
Electronic Resource.
Turabian Style
Gwartney, James, Lawson, Robert.
Economic freedom of the world: 2008 annual report.
:
,
2008.
Electronic Resource.