APA Style
Spencer, David E.. (1990).
Study Guide Parkin Economics .
Amerika:
Addison-Wesley Publishing Company.
Chicago Style
Spencer, David E..
Study Guide Parkin Economics.
Amerika:
Addison-Wesley Publishing Company,
1990.
Text.
MLA Style
Spencer, David E..
Study Guide Parkin Economics.
Amerika:
Addison-Wesley Publishing Company,
1990.
Text.
Turabian Style
Spencer, David E..
Study Guide Parkin Economics.
Amerika:
Addison-Wesley Publishing Company,
1990.
Print.