APA Style
Hubbard, R. Glenn, O'Brien, Anthony Patrick. (2013).
Economics 4th ed. (4th; Horizon Ed.).
Harlow:
.
Chicago Style
Hubbard, R. Glenn, O'Brien, Anthony Patrick.
Economics 4th ed..
4th; Horizon Ed.
Harlow:
,
2013.
Text.
MLA Style
Hubbard, R. Glenn, O'Brien, Anthony Patrick.
Economics 4th ed..
4th; Horizon Ed.
Harlow:
,
2013.
Text.
Turabian Style
Hubbard, R. Glenn, O'Brien, Anthony Patrick.
Economics 4th ed..
4th; Horizon Ed.
Harlow:
,
2013.
Print.