Gaya APA
LIEBHAFSKY, H. (1968).
THE NATURE OF PRICE THEORY (Revised Edition).
United States of Amerika:
The Dorsey Press.
Gaya MLA
LIEBHAFSKY, H.H..
"THE NATURE OF PRICE THEORY".
Revised Edition
United States of Amerika:
The Dorsey Press,
1968.
Textbook.