Gaya APA
Heilbroner, Robert, Thurow, Lester C. (1981).
The Economic Problem (6 ed.).
New York:
Prentice Hall.
Gaya Chicago
Heilbroner, Robert, Thurow, Lester C.
The Economic Problem.
6 ed.
New York:
Prentice Hall,
1981.
Text.
Gaya MLA
Heilbroner, Robert, Thurow, Lester C.
The Economic Problem.
6 ed.
New York:
Prentice Hall,
1981.
Text.
Gaya Turabian
Heilbroner, Robert, Thurow, Lester C.
The Economic Problem.
6 ed.
New York:
Prentice Hall,
1981.
Print.