Gaya APA
Ekelund, Robert B. (1990).
A History Of Economic Theory and Method (3rd ed.).
Singapore:
Mcgraw hill.
Gaya Chicago
Ekelund, Robert B.
A History Of Economic Theory and Method.
3rd ed.
Singapore:
Mcgraw hill,
1990.
Text.
Gaya MLA
Ekelund, Robert B.
A History Of Economic Theory and Method.
3rd ed.
Singapore:
Mcgraw hill,
1990.
Text.
Gaya Turabian
Ekelund, Robert B.
A History Of Economic Theory and Method.
3rd ed.
Singapore:
Mcgraw hill,
1990.
Print.