APA Style
Henderson, Henderson, Poole, Poole. (1991).
PRINCIPLES OF economics .
Lexington, MA:
D. C. Heath and Company.
Chicago Style
Henderson, Henderson, Poole, Poole.
PRINCIPLES OF economics.
Lexington, MA:
D. C. Heath and Company,
1991.
Text.
MLA Style
Henderson, Henderson, Poole, Poole.
PRINCIPLES OF economics.
Lexington, MA:
D. C. Heath and Company,
1991.
Text.
Turabian Style
Henderson, Henderson, Poole, Poole.
PRINCIPLES OF economics.
Lexington, MA:
D. C. Heath and Company,
1991.
Print.