APA Style
Henderson, J. Vernon, Poole, William. (1991).
Principles of Economics .
Amerika:
D.C. Heath and Company.
Chicago Style
Henderson, J. Vernon, Poole, William.
Principles of Economics.
Amerika:
D.C. Heath and Company,
1991.
Text.
MLA Style
Henderson, J. Vernon, Poole, William.
Principles of Economics.
Amerika:
D.C. Heath and Company,
1991.
Text.
Turabian Style
Henderson, J. Vernon, Poole, William.
Principles of Economics.
Amerika:
D.C. Heath and Company,
1991.
Print.