APA Style
Economic concepts. (1990).
New York:
McGraw-Hill.
Chicago Style
Economic concepts.
9th ed..
New York:
McGraw-Hill,
1990.
.
MLA Style
Economic concepts.
9th ed..
New York:
McGraw-Hill,
1990.
.
Turabian Style
Economic concepts.
New York:
McGraw-Hill,
1990.
.